US2371704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-action pump
Assignee: TYRRELL A S BERGER
•
Filing: 1943-09-08
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Granted: 1945-03-20
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Expires: 1963-09-08
Abstract
No abstract record available.
Inventors
- 👤 Floyd A Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:22
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/111; F04B9/113; F01; F01L; F01L23/00; F01L33/00; F01L33/04; F04B53/00; F04B53/10; F04B53/1037; F04B53/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-03-19 | 1948-09-18 | 1949-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-03-19 | 1952-09-18 | 1953-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-03-19 | 1956-09-18 | 1957-03-20 | $7700.00 | Window Closed / Lapsed |