US2696170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circulating pump
Assignee: Individual
•
Filing: 1951-10-04
•
Granted: 1954-12-07
•
Expires: 1971-10-04
Abstract
No abstract record available.
Inventors
- 👤 Hill Myron Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:43
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/22; F16C19/40; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/084; F04C2/10; F04C2/102; F16C19/24; F16C19/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1496222A
Cited
US1513659A
Cited
GB370474A
Cited
US1972355A
Cited
US2011184A
Cited
US2117877A
Cited
US2312514A
Cited
US2416987A
Cited
US2445967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |