US2561519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-output hydraulic pump
Assignee: Individual
•
Filing: 1948-02-19
•
Granted: 1951-07-24
•
Expires: 1968-02-19
Abstract
No abstract record available.
Inventors
- 👤 Leech Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:05
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/20; F04B1/2014; F04B1/2042; F04B1/205; F04B1/122; F04B1/124; F04B1/22; F04B1/26; F04B1/30; F04B1/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1180190A
Cited
GB191403827A
Cited
US1669976A
Cited
US2234009A
Cited
US2333422A
Cited
US2439668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |