US1317032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stream line hollow spar or strut for aircraft
Assignee: —
•
Filing: —
•
Granted: 1919-09-23
•
Expires: 1936-09-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:49
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/18; 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) | 1922-09-22 | 1923-03-24 | 1923-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-09-22 | 1927-03-24 | 1927-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-09-22 | 1931-03-24 | 1931-09-23 | $7700.00 | Window Closed / Lapsed |