US2890638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cameras
Assignee: Hittech Prontor GmbH
•
Filing: 1954-03-26
•
Granted: 1959-06-16
•
Expires: 1974-03-26
Abstract
No abstract record available.
Inventors
- 👤 Karl F Rentschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:02
CPC Classifications
G; G03; G03B; G03B29/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1236419A
Cited
US2176679A
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US2168893A
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US2206132A
Cited
US2352177A
Cited
US2529757A
Cited
US2708395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-15 | 1962-12-15 | 1963-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-15 | 1966-12-15 | 1967-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-15 | 1970-12-15 | 1971-06-16 | $7700.00 | Window Closed / Lapsed |