US2902935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump assembly having plurality of individual pump units
Assignee: Individual
•
Filing: 1957-05-24
•
Granted: 1959-09-08
•
Expires: 1977-05-24
Abstract
No abstract record available.
Inventors
- 👤 Dinnison Arthur Dean
- 👤 Arnold H Wamsley
- 👤 Ernest W Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:53
CPC Classifications
F; F04; F04C; F04C11/00; F04C11/001; F04C5/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US796724A
Cited
US1218300A
Cited
US1531607A
Cited
GB630393A
Cited
US2548865A
Cited
GB596064A
Cited
US2669466A
Cited
US2620553A
Cited
US2663263A
Cited
FI25545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |