US1605571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repeater motor
Assignee: Sperry Gyroscope Co Ltd
•
Filing: 1920-12-03
•
Granted: 1926-11-02
•
Expires: 1940-12-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Elmer A Sperry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:29
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22
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) | 1929-11-01 | 1930-05-03 | 1930-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-11-01 | 1934-05-03 | 1934-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-11-01 | 1938-05-03 | 1938-11-02 | $7700.00 | Window Closed / Lapsed |