US3249003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth-of-field correction for score projection system
Assignee: Brunswick Corp
•
Filing: 1963-06-20
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Granted: 1966-05-03
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Expires: 1983-06-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Byrd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:53
CPC Classifications
G; G03; G03B; G03B21/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
A PROJECTION SYSTEM COMPRISING A LIGHT TRANSMITTING PLATEN HAVING AN INTERNALLY REFLECTING SURFACE, MEANS FOR MAKING A LEGEND ON SAID SURFACE A LIGHT SOURCE AND MEANS ASSOCIATED THEREWITH FOR DIRECTING LIGHT THROUGH SAID PLATEN AT AN ANGLE TOWARD SAID REFLECTING SURFACE FOR REFLECTING AN IMAGE THEREFROM, A VIEWING SCREEN, MEANS FOR DIRECTING THE REFLECTED IMAGE TO THE VIEWING SCREEN, AND LIGHT TRANSMITTING MEANS BETWEEN SAID INTERNALLY REFLECTING SURFACE AND THE VIEWING SCREEN FOR CORRECTING DEPTH-OF-FIELD ERROR IN THE REFLECTED IMAGE.
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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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |