US653979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw-propeller.
Assignee: CHARLES W TREFNY
•
Filing: 1900-03-10
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Granted: 1900-07-17
•
Expires: 1920-03-10
Abstract
No abstract record available.
Inventors
- 👤 John B Altman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:09
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H2001/122; F; F05; F05B; F05B2250/00; F05B2250/20; F05B2250/25
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) | 1903-07-17 | 1904-01-16 | 1904-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-07-17 | 1908-01-16 | 1908-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-07-17 | 1912-01-16 | 1912-07-17 | $7700.00 | Window Closed / Lapsed |