US2822183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheeled propeller sheath
Assignee: Individual
•
Filing: 1955-03-18
•
Granted: 1958-02-04
•
Expires: 1975-03-18
Abstract
No abstract record available.
Inventors
- 👤 William H Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:28
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/36; Y; Y10; Y10S; Y10S280/00; Y10S280/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US362868A
Cited
US725815A
Cited
US1099821A
Cited
US1103486A
Cited
US1186210A
Cited
US1861948A
Cited
US2244217A
Cited
US2396368A
Cited
US2589376A
Cited
US2666460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |