Patent US5309279A successfully refreshed from Google Patents.
US5309279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Script view a curved convex magnifying device
Assignee: Individual
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Filing: 1992-08-21
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Granted: 1994-05-03
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Expires: 2012-08-21
Abstract
Abstract An optical instrument for magnifying printed or written material on three dimensional round or oval containers or objects. The instrument is an arced convex lens which provides distortion free magnification of multiple lines of text inscribed around the circumference or perimeter of vials, bottles, or other curved objects, while staying self affixed. The instrument is simply slid up or down, if required, to magnify the chosen text.
Inventors
- 👤 Madeline C. Halstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:34
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; A; A61; A61J; A61J7/00; A61J7/04; G02B25/00; G02B25/002; A61M; A61M2205/00; A61M2205/58; A61M2205/583; A61M2205/585
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
66 words
An instrument for magnifying lines of text printed on a container, said instrument comprising: a lens means for magnifying said lines of text, said lens means having a shape of an open ring, said open ring having a convex outer surface and a flat inner surface curved inward, and having lead-ins notched into said inner surface and means for releasably attaching said instrument to said container.
Claim 2
Dependent Claim
66 words
An instrument for magnifying lines of text printed on a container, said instrument comprising: a lens means for magnifying said lines of text, said lens means having a shape of an open ring, said open ring having a convex outer surface and a flat inner surface curved inward, and having lead-ins notched into said inner surface and means for releasably attaching said instrument to said container.
Claim 3
Dependent Claim
23 words
The instrument of claim 1 wherein said releasably attaching means includes tabs which are integrally formed at both ends of said open ring.
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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) | 1997-05-02 | 1997-11-01 | 1998-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-02 | 2001-11-01 | 2002-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-02 | 2005-11-01 | 2006-05-03 | $7700.00 | Window Closed / Lapsed |