Patent US3309665A successfully refreshed from Google Patents.
US3309665A
Expired / Lapsed
US
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Process and apparatus for collimated sign
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1963-07-19
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Granted: 1967-03-14
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Expires: 1983-07-19
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Kohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:55
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A COLLIMATING DISPLAY SIGN DESIGNED TO VISIBLY AND INTELLIGIBLY COMMUNICATE INFORMATION TO A VIEWER ONLY ALONG A PREDETERMINED LINE OF SIGHT, WHICH COMPRISES: A DISPLAY MEMBER HAVING A REPRESENTATION TO BE VISUALLY COMMUNICATED TO SAID VIEWER ONLY ALONG SAID PREDETERMINED LINE OF SIGHT, AND MEANS FOR RECIPROCATING SAID DISPLAY MEMBER ALONG A RECTILINEAR PATH PARALLEL TO SAID PREDETERMINED LINE OF SIGHT SO THAT ONLY TO A VIEWER WHO IS LOOKING AT SAID REPRESENTATION ALONG A LINE OF SIGHT PARALLEL TO SAID PATH OF RECIPROCATION DOES SAID DISPLAY MEMBER APPEAR TO BE STATIONARY AND THE REPRESENTATION APPEAR INTELLIGIBLE.
Claim 2
Dependent Claim
97 words
A COLLIMATING DISPLAY SIGN DESIGNED TO VISIBLY AND INTELLIGIBLY COMMUNICATE INFORMATION TO A VIEWER ONLY ALONG A PREDETERMINED LINE OF SIGHT, WHICH COMPRISES: A DISPLAY MEMBER HAVING A REPRESENTATION TO BE VISUALLY COMMUNICATED TO SAID VIEWER ONLY ALONG SAID PREDETERMINED LINE OF SIGHT, AND MEANS FOR RECIPROCATING SAID DISPLAY MEMBER ALONG A RECTILINEAR PATH PARALLEL TO SAID PREDETERMINED LINE OF SIGHT SO THAT ONLY TO A VIEWER WHO IS LOOKING AT SAID REPRESENTATION ALONG A LINE OF SIGHT PARALLEL TO SAID PATH OF RECIPROCATION DOES SAID DISPLAY MEMBER APPEAR TO BE STATIONARY AND THE REPRESENTATION APPEAR INTELLIGIBLE.
References Cited (Backward Citations)
US2063687A
Cited
US2982179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |