US2901941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photogrammetric projection apparatus
Assignee: Bausch and Lomb Inc
•
Filing: 1957-05-20
•
Granted: 1959-09-01
•
Expires: 1977-05-20
Abstract
No abstract record available.
Inventors
- 👤 Corwin H Brumley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:19
CPC Classifications
G; G01; G01C; G01C11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2417446A
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US2494566A
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US2451031A
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US2565213A
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US2532402A
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US2492148A
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US2604601A
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US2492870A
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US2552975A
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US2678583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |