US2672097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor driven high-pressure pump
Assignee: Individual
•
Filing: 1949-10-14
•
Granted: 1954-03-16
•
Expires: 1969-10-14
Abstract
No abstract record available.
Inventors
- 👤 August F Pfingsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:28
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1663253A
Cited
US1054762A
Cited
US1538881A
Cited
US1903210A
Cited
US2265971A
Cited
US2299879A
Cited
US2274763A
Cited
US2413775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |