US3381570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Full rotation measuring optical instrument providing precise angular readout
Assignee: Collins Radio Co
•
Filing: 1963-10-30
•
Granted: 1968-05-07
•
Expires: 1983-10-30
Abstract
No abstract record available.
Inventors
- 👤 Alan C Anway
- 👤 John E Dawkins
- 👤 Robert D Joy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:56
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/26; G01C; G01C21/00; G01C21/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |