US1628136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyroscopic compass
Assignee: Ford Instrument Co Inc
•
Filing: 1921-02-12
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Granted: 1927-05-10
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Expires: 1941-02-12
Abstract
No abstract record available.
Inventors
- 👤 Hannibal C Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:22
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/34; G01C19/38; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1296
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-05-09 | 1930-11-08 | 1931-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-05-09 | 1934-11-08 | 1935-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-05-09 | 1938-11-08 | 1939-05-10 | $7700.00 | Window Closed / Lapsed |