US2882829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabricated impeller for pumps
Assignee: FMC Corp
•
Filing: 1956-02-09
•
Granted: 1959-04-21
•
Expires: 1976-02-09
Abstract
No abstract record available.
Inventors
- 👤 John B Wade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:34
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2205; F04D29/2222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190112347A
Cited
US782343A
Cited
US1745854A
Cited
GB407633A
Cited
US2336231A
Cited
US2486619A
Cited
US2632397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |