Patent US1637389A successfully refreshed from Google Patents.
US1637389A
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Aerial propulsion
Assignee: Individual
•
Filing: 1925-12-01
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Granted: 1927-08-02
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Expires: 1945-12-01
Abstract
No abstract record available.
Inventors
- 👤 Peterson Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:56
CPC Classifications
B; B64; B64C; B64C11/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49332
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) | 1930-08-01 | 1931-01-31 | 1931-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-08-01 | 1935-01-31 | 1935-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-08-01 | 1939-01-31 | 1939-08-02 | $7700.00 | Window Closed / Lapsed |