Patent US2794399A successfully refreshed from Google Patents.
US2794399A
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US
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Pump and lubricator combination
Assignee: Individual
•
Filing: 1953-11-24
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Granted: 1957-06-04
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Expires: 1973-11-24
Abstract
No abstract record available.
Inventors
- 👤 Murphy Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:49
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F04D29/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US412556A
Cited
US910307A
Cited
US1924407A
Cited
US2251020A
Cited
US2453249A
Cited
US2505868A
Cited
US2658775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |