US2517307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump plunger and method of making such plungers
Assignee: Individual
•
Filing: 1947-02-08
•
Granted: 1950-08-01
•
Expires: 1967-02-08
Abstract
No abstract record available.
Inventors
- 👤 Dixon T Harbison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:26
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/14; F04B53/143; F16; F16J; F16J1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1551081A
Cited
US1173452A
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US1639501A
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US1954130A
Cited
US2041520A
Cited
US2180240A
Cited
US2295521A
Cited
US2376854A
Cited
US2399550A
Cited
US2409645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |