US2493929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Wayne Pump Co
•
Filing: 1944-08-26
•
Granted: 1950-01-10
•
Expires: 1964-08-26
Abstract
No abstract record available.
Inventors
- 👤 Howard E Rittenhouse
- 👤 Samuel E Gilmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:08
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/28; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7439
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1868444A
Cited
GB420501A
Cited
US2196500A
Cited
GB509247A
Cited
US2170530A
Cited
US2189210A
Cited
US2303589A
Cited
US2306632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |