Patent US3281853A successfully refreshed from Google Patents.
US3281853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display marking apparatus
Assignee: Laboratory For Electronics Inc
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Filing: 1964-05-11
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Granted: 1966-10-25
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Madeira John Bernard
- 👤 Robert T Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:08
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
APPARATUS FOR PLOTTING THE POSITION OF A MOVING VEHICLE COMPRISING: (A) A PLATEN OVER WHICH A CHART TO BE MARKED MAY BE MOVEABLY DISPOSED, (B) AN ELECTROMAGNET POSITIONED WITHIN SAID PLATEN AND HAVING AT LEAST ONE POLE EXTENDING IN A TRANSVERSE DIRECTION WITH RESPECT TO SAID PLATEN, (C) AN INKED RIBBON SUPPORTED BY A FIRST TRANSPARENT MEMBER OVERLYING THE CHART, BOTH SAID INKED RIBBON AND SAID SUPPORT MEMBER EXTENDING IN A TRANSVERSE DIRECTION WITH RESPECT TO SAID PLATEN AND BEING ALIGNED WITH SAID POLE OF SAID ELECTROMAGNET, (D) A SECOND TRANSPARENT MEMBER OVERLYING SAID INKED RIBBON AND BEING MOVEABLE IN A TRANSVERSE DIRECTION WITH RESPECT TO SAID CHART, (E) A MAGNETIZABLE MARKER AFFIXED TO SAID SECOND TRANSPARENT MEMBER, (F) MEANS FOR MOVING THE CHART AND THE SECOND TRANSPARENT MEMBER WITH RESPECT TO ONE ANOTHER, THEREBY POSITIONING THE MAGNETIZABLE MARKER OVER THE
Claim 2
Dependent Claim
141 words
APPARATUS FOR PLOTTING THE POSITION OF A MOVING VEHICLE COMPRISING: (A) A PLATEN OVER WHICH A CHART TO BE MARKED MAY BE MOVEABLY DISPOSED, (B) AN ELECTROMAGNET POSITIONED WITHIN SAID PLATEN AND HAVING AT LEAST ONE POLE EXTENDING IN A TRANSVERSE DIRECTION WITH RESPECT TO SAID PLATEN, (C) AN INKED RIBBON SUPPORTED BY A FIRST TRANSPARENT MEMBER OVERLYING THE CHART, BOTH SAID INKED RIBBON AND SAID SUPPORT MEMBER EXTENDING IN A TRANSVERSE DIRECTION WITH RESPECT TO SAID PLATEN AND BEING ALIGNED WITH SAID POLE OF SAID ELECTROMAGNET, (D) A SECOND TRANSPARENT MEMBER OVERLYING SAID INKED RIBBON AND BEING MOVEABLE IN A TRANSVERSE DIRECTION WITH RESPECT TO SAID CHART, (E) A MAGNETIZABLE MARKER AFFIXED TO SAID SECOND TRANSPARENT MEMBER, (F) MEANS FOR MOVING THE CHART AND THE SECOND TRANSPARENT MEMBER WITH RESPECT TO ONE ANOTHER, THEREBY POSITIONING THE MAGNETIZABLE MARKER OVER THE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |