US3516173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Navigation apparatus
Assignee: Bunker Ramo Corp
•
Filing: 1967-01-18
•
Granted: 1970-06-23
•
Expires: 1987-01-18
Abstract
No abstract record available.
Inventors
- 👤 Ralph J Koerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:12
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G01; G01R; G01R33/00; G01R33/02; G01R33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3355705A
Cited
US2158500A
Cited
US2241499A
Cited
FR886979A
Cited
US2834939A
Cited
US2802983A
Cited
US2847642A
Cited
US3159785A
Cited
US3280781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |