US2612837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: American Engineering Co Ltd
•
Filing: 1946-05-21
•
Granted: 1952-10-07
•
Expires: 1966-05-21
Abstract
No abstract record available.
Inventors
- 👤 Ernst L Midgette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:51
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/053; F04B1/0536; F04B1/0538; F04B1/0404; F04B1/0408; F04B1/0443; F04B1/06; F04B1/07; F04B49/00; F04B49/12; F04B49/123; F04B49/125
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US603805A
Cited
US1306382A
Cited
DE316328C
Cited
US948302A
Cited
US1109349A
Cited
US1396151A
Cited
US1910581A
Cited
US2164888A
Cited
US2310078A
Cited
US2279645A
Cited
US2243374A
Cited
US2319718A
Cited
US2426100A
Cited
US2393128A
Cited
US2379156A
Cited
US2404502A
Cited
US2404547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |