US2471915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear pump
Assignee: RTX Corp
•
Filing: 1946-12-24
•
Granted: 1949-05-31
•
Expires: 1966-12-24
Abstract
No abstract record available.
Inventors
- 👤 Alfred B Thacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:51
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/06; F04C15/062; F04C2/00; F04C2/08; F04C2/082; F04C2/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191509359A
Cited
US1912737A
Cited
US1912738A
Cited
US1985748A
Cited
US1978480A
Cited
US1862440A
Cited
US2188848A
Cited
US2400485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |