Patent US2773913A successfully refreshed from Google Patents.
Patent US5065537A successfully refreshed from Google Patents.
US5065537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Changeable letter sign system
Assignee: Gemini Inc
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Filing: 1990-03-22
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Granted: 1991-11-19
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Expires: 2010-03-22
Abstract
Abstract A changeable letter sign system including a plurality of panels, each bearing a letter, character or other suitable indicia and combinable on an overhead readerboard to display a message thereon, each of the panels having magnetically attractive material carried on the normally front face thereof, in complete contiguous arrangement with the peripheral inner and outer edges of the indicia on the panel, and including a tool having a magnet presenting a pair of feet for engagement with said magnetically attractive material to permit holding of the panels for placement on or removal from suitable retaining means on the wall of the readerboard.
Inventors
- 👤 Raymond J. Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:43
CPC Classifications
G; G09; G09F; G09F7/00; G09F7/02; G09F7/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
115 words
A changeable letter sign system comprising: a readerboard for receiving a plurality of panels, each bearing a three dimensional, plastic letter thereon, said panels being combinable to collectively present a message displayed on the readerboard, said panels each having a normally front face and a normally rear face, the rear face being proximal to the readerboard when the panel is in place, the front face having the letter thereon and facing outwardly from said readerboard; means for retaining said panels with respect to the readerboard; and magnetically attractive material carried by each of said panels, the magnetically attractive material being only on said front face providing a means for removing the panel from the readerboard.
Claim 2
Dependent Claim
115 words
A changeable letter sign system comprising: a readerboard for receiving a plurality of panels, each bearing a three dimensional, plastic letter thereon, said panels being combinable to collectively present a message displayed on the readerboard, said panels each having a normally front face and a normally rear face, the rear face being proximal to the readerboard when the panel is in place, the front face having the letter thereon and facing outwardly from said readerboard; means for retaining said panels with respect to the readerboard; and magnetically attractive material carried by each of said panels, the magnetically attractive material being only on said front face providing a means for removing the panel from the readerboard.
Claim 3
Dependent Claim
30 words
A changeable letter sign system as set forth in claim 1, the magnetically attractive material presenting a sufficient surface area to permit a magnet to be placed in contact therewith.
Claim 4
Dependent Claim
32 words
A changeable letter sign system as set forth in claim 2, the attraction between the material and the magnet being sufficient to permit the magnet to remove the panel from the readerboard.
Claim 5
Dependent Claim
24 words
A changeable letter sign system as set forth in claim 3, the magnetically attractive material at least partially outlining the letter on the panel.
Claim 6
Dependent Claim
28 words
A changeable letter sign system as set forth in claim 4, the magnetically attractive material having a configuration complementary to the periphery of the letter on the panel.
Claim 7
Dependent Claim
42 words
A changeable letter sign system as set forth in claim 5, the magnetically attractive material being in the form of a strip of such material totally laid on the front face of the panel and completely outlining the letter on the panel.
Claim 8
Dependent Claim
32 words
A changeable letter sign system as set forth in claim 6, the strip of magnetically attractive material being contiguous with the peripheral inner and outer edges of the letter on the panel.
Claim 9
Dependent Claim
24 words
A changeable letter sign system as set forth in claim 7, the letter being of substantially greater height than the thickness of the strip.
Claim 10
Dependent Claim
31 words
A changeable letter sign system as set forth in claim 8, the transverse dimension of the letter being substantially greater than the transverse dimension of the strip of magnetically attractive material.
Claim 11
Dependent Claim
51 words
A changeable letter sign system as set forth in claim 9, the system including a magnet on a handle for engaging the magnetically attractive material to thereby hold the panel to the magnet so that the panel may be installed and removed by use of the handle with the magnet thereon.
Claim 12
Dependent Claim
39 words
A changeable, letter sign system as set forth in claim 10, the magnet having a pair of spaced feet, the spacing between the feet being sufficient to permit the magnet to straddle at least one dimension of the letter.
Claim 13
Dependent Claim
42 words
A changeable letter sign system as set forth in claim 11, the means for retaining the panels on the readerboard constituting a pair of spaced rails for respectively receiving opposite edges of the panel, the letter being readably positioned between said edges.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |