US2443110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump piston
Assignee: Individual
•
Filing: 1945-11-20
•
Granted: 1948-06-08
•
Expires: 1965-11-20
Abstract
No abstract record available.
Inventors
- 👤 John W Macclatchie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:26
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/14; F04B53/143; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3268; F16J15/3276
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1892022A
Cited
US2063724A
Cited
US2051262A
Cited
US2144736A
Cited
US2233030A
Cited
US2320973A
Cited
US2320975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |