US3514186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide angle optical apparatus
Assignee: EUGENE F PONCELET
•
Filing: 1968-04-10
•
Granted: 1970-05-26
•
Expires: 1988-04-10
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Poncelet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:35
CPC Classifications
G; G02; G02B; G02B13/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1716668A
Cited
US1932817A
Cited
US1975302A
Cited
US2603128A
Cited
US2783757A
Cited
US3182576A
Cited
US3404934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |