US2467524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump with seizure preventing means
Assignee: GRAY MARINE MOTOR Co
•
Filing: 1944-09-02
•
Granted: 1949-04-19
•
Expires: 1964-09-02
Abstract
No abstract record available.
Inventors
- 👤 Robert W Fernstrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:55
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/084; F04C2/12; F04C2/14; F04C2/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US703511A
Cited
US877903A
Cited
US1161037A
Cited
US1521446A
Cited
US1823098A
Cited
US2028414A
Cited
US2115193A
Cited
US2212939A
Cited
US2299321A
Cited
GB547463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |