US2723794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Peters and Russell Inc
•
Filing: 1951-09-07
•
Granted: 1955-11-15
•
Expires: 1971-09-07
Abstract
No abstract record available.
Inventors
- 👤 Linus E Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:24
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/14; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1099
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US782720A
Cited
US1012867A
Cited
US1138120A
Cited
US1429220A
Cited
US1636223A
Cited
US1847110A
Cited
US2293399A
Cited
US2434377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |