US2719639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power lift
Assignee: Napco Industries Inc
•
Filing: 1952-05-31
•
Granted: 1955-10-04
•
Expires: 1972-05-31
Abstract
No abstract record available.
Inventors
- 👤 Gerst Chris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:50
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/3405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2256314A
Cited
US2477789A
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US2614712A
Cited
US2479048A
Cited
US2449279A
Cited
US2560674A
Cited
US2537010A
Cited
US2551322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-03 | 1959-04-04 | 1959-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-03 | 1963-04-04 | 1963-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-03 | 1967-04-04 | 1967-10-04 | $7700.00 | Window Closed / Lapsed |