Patent US2731173A successfully refreshed from Google Patents.
US2731173A
Expired / Lapsed
US
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Grease pump
Assignee: Individual
•
Filing: 1952-09-20
•
Granted: 1956-01-17
•
Expires: 1972-09-20
Abstract
No abstract record available.
Inventors
- 👤 Harrigan William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:34
CPC Classifications
F; F16; F16N; F16N13/00; F16N13/02; F16N5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1014447A
Cited
US1396494A
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US1698023A
Cited
US1813183A
Cited
US1787751A
Cited
US1943605A
Cited
US2362922A
Cited
US2622529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |