US2737849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic objective
Assignee: CYCLOPTIC ANSTALT fur OPTIK UN
•
Filing: 1951-08-22
•
Granted: 1956-03-13
•
Expires: 1971-08-22
Abstract
No abstract record available.
Inventors
- 👤 Tiller Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:09
CPC Classifications
G; G02; G02B; G02B9/00; G02B9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US599700A
Cited
US1154232A
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US1605016A
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US1572236A
Cited
US1593786A
Cited
US1955850A
Cited
US2000470A
Cited
US2055859A
Cited
US2215271A
Cited
US2313460A
Cited
US2274974A
Cited
US2651970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |