Patent US1597918A successfully refreshed from Google Patents.
US1597918A
Expired / Lapsed
US
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Aeroplane parachute
Assignee: Individual
•
Filing: 1925-10-05
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Granted: 1926-08-31
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Expires: 1945-10-05
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Mangan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:50
CPC Classifications
B; B64; B64D; B64D25/00; B64D25/08; B64D25/12
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) | 1929-08-30 | 1930-03-01 | 1930-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-08-30 | 1934-03-01 | 1934-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-08-30 | 1938-03-01 | 1938-08-31 | $7700.00 | Window Closed / Lapsed |