US3465660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposure measuring device in photographic mirror-reflex cameras
Assignee: Pentacon GmbH Foto und Feinwerktechnik
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Filing: 1967-01-09
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Granted: 1969-09-09
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Expires: 1987-01-09
Abstract
No abstract record available.
Inventors
- 👤 Werner Trankner
- 👤 Rolf Jurenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:13
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/099; G03B7/0993; G03B7/0997; G03B7/09971; G03B7/09976
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3332330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |