US2479077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced hydraulic pump or motor
Assignee: Webster Electric Co Inc
•
Filing: 1945-07-23
•
Granted: 1949-08-16
•
Expires: 1965-07-23
Abstract
No abstract record available.
Inventors
- 👤 John C Mcalvay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:44
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1379587A
Cited
US1372576A
Cited
US1937367A
Cited
US2111883A
Cited
US2212994A
Cited
US2176787A
Cited
US2319374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |