US2581828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Nash Engineering Co
•
Filing: 1946-03-07
•
Granted: 1952-01-08
•
Expires: 1966-03-07
Abstract
No abstract record available.
Inventors
- 👤 Harold E Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:56
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/001; F04D9/002; F04D9/003
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1780679A
Cited
US1901154A
Cited
US1989061A
Cited
US2134686A
Cited
US2368528A
Cited
US2368530A
Cited
US2402398A
Cited
US2461865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |