US3049970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens adapter
Assignee: Individual
•
Filing: 1959-06-29
•
Granted: 1962-08-21
•
Expires: 1979-06-29
Abstract
No abstract record available.
Inventors
- 👤 Otho L Steinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:19
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE574772C
Cited
US2233441A
Cited
FR887622A
Cited
US2682804A
Cited
US2776595A
Cited
US2792741A
Cited
US2897717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |