Patent US534849A successfully refreshed from Google Patents.
Patent US1845136A successfully refreshed from Google Patents.
US1845136A
Expired / Lapsed
US
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Airplane engine
Assignee: Individual
•
Filing: 1930-10-08
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Granted: 1932-02-16
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Expires: 1950-10-08
Abstract
No abstract record available.
Inventors
- 👤 Dieter William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:41
CPC Classifications
B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/20; B64D37/22; F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/048; F16K11/08; F16K11/085; F16K11/0853; F16K17/00; F16K17/36; F16K17/363; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0923; Y10T137/8593; Y10T137/86348
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) | 1935-02-15 | 1935-08-17 | 1936-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-02-15 | 1939-08-17 | 1940-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-02-15 | 1943-08-17 | 1944-02-16 | $7700.00 | Window Closed / Lapsed |