Patent US1327183A successfully refreshed from Google Patents.
US1327183A
Expired / Lapsed
US
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Control for dual-control aeroplanes
Assignee: Individual
•
Filing: 1918-08-30
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Granted: 1920-01-06
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Expires: 1938-08-30
Abstract
No abstract record available.
Inventors
- 👤 Frederic Langtry Van Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:59
CPC Classifications
B; B64; B64C; B64C13/00; B64C13/02; B64C13/04; B64C13/12
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) | 1923-01-05 | 1923-07-07 | 1924-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-01-05 | 1927-07-07 | 1928-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-01-05 | 1931-07-07 | 1932-01-06 | $7700.00 | Window Closed / Lapsed |