US2925010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable focal length lens
Assignee: WOLLENSAK OPTICAL CO
•
Filing: 1959-01-15
•
Granted: 1960-02-16
•
Expires: 1979-01-15
Abstract
No abstract record available.
Inventors
- 👤 Turula Eugene
- 👤 Geraldine B Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:35
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/146; G02B15/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2514239A
Cited
US2566485A
Cited
US2649025A
Cited
US2718817A
Cited
US2778272A
Cited
US2737082A
Cited
US2847907A
Cited
US2843016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |