US3472140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image magnification adapter for cameras
Assignee: National Aeronautics and Space Administration
•
Filing: 1966-12-12
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Granted: 1969-10-14
•
Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Fred L Moffitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:15
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/12; G03B17/48; G03B17/50; G03B17/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3005391A
Cited
US2959097A
Cited
US3195431A
Cited
US3198097A
Cited
US3330193A
Cited
US3385188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |