US1431017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aeroplane alighting device
Assignee: Individual
•
Filing: 1921-03-05
•
Granted: 1922-10-03
•
Expires: 1941-03-05
Abstract
No abstract record available.
Inventors
- 👤 James V Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:43
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/38; B64C3/54; Y; Y02; Y02T; Y02T50/00; Y02T50/10
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) | 1925-10-02 | 1926-04-03 | 1926-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-10-02 | 1930-04-03 | 1930-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-10-02 | 1934-04-03 | 1934-10-03 | $7700.00 | Window Closed / Lapsed |