US2420984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pump
Assignee: NATHAN Manufacturing CO
•
Filing: 1945-10-25
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Granted: 1947-05-20
•
Expires: 1965-10-25
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:05
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/04; F04B7/06; F04B1/00; F04B1/12; F04B1/122; F04B1/124; F04B49/00; F04B49/12; F04B1/04; F04B1/06; F04B1/07; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2369345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-19 | 1950-11-18 | 1951-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-19 | 1954-11-18 | 1955-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-19 | 1958-11-18 | 1959-05-20 | $7700.00 | Window Closed / Lapsed |