US2845873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating fluid pump
Assignee: Doosan Bobcat North America Inc
•
Filing: 1954-09-08
•
Granted: 1958-08-05
•
Expires: 1974-09-08
Abstract
No abstract record available.
Inventors
- 👤 Lapsley Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:00
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/12; F04C2/14; F04C2/20; F04C11/00; F04C11/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US912549A
Cited
US1157783A
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US1648092A
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US1597411A
Cited
US1771863A
Cited
US1976761A
Cited
US2390880A
Cited
US2525619A
Cited
US2697912A
Cited
US2694978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |