US2917019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller housing attachments
Assignee: Individual
•
Filing: 1955-02-16
•
Granted: 1959-12-15
•
Expires: 1975-02-16
Abstract
No abstract record available.
Inventors
- 👤 Fred C Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:31
CPC Classifications
B; B63; B63B; B63B43/00; B63B43/18; B63H; B63H5/00; B63H5/07; B63H5/125; B63H2005/1254; B63H2005/1256
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1204895A
Cited
US1574977A
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US1689962A
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US1745235A
Cited
US1824213A
Cited
US1802351A
Cited
US1990387A
Cited
US1943288A
Cited
US2103087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |