US2839002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumps
Assignee: Individual
•
Filing: 1955-05-13
•
Granted: 1958-06-17
•
Expires: 1975-05-13
Abstract
No abstract record available.
Inventors
- 👤 Williams Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:12
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/06; F04B43/067; F04B49/00; F04B49/22; F04B49/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1584449A
Cited
US1650377A
Cited
US1782144A
Cited
US1927587A
Cited
US2195037A
Cited
US2303597A
Cited
US2371787A
Cited
US2603158A
Cited
US2543828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |