Patent US2435581A successfully refreshed from Google Patents.
US2435581A
Expired / Lapsed
US
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Gyroscopic instrument
Assignee: Individual
•
Filing: 1944-03-14
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Granted: 1948-02-10
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Expires: 1964-03-14
Abstract
No abstract record available.
Inventors
- 👤 Miles G Greenland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:54
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/32; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1232; Y10T74/1236; Y10T74/1246
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1308783A
Cited
GB191404891A
Cited
FR509648A
Cited
US1429588A
Cited
GB316380A
Cited
US1942470A
Cited
US2044150A
Cited
FR760535A
Cited
US2273876A
Cited
US2300548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-09 | 1951-08-11 | 1952-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-09 | 1955-08-11 | 1956-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-09 | 1959-08-11 | 1960-02-10 | $7700.00 | Window Closed / Lapsed |