US2504683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grease gun filter attachment
Assignee: Individual
•
Filing: 1947-05-01
•
Granted: 1950-04-18
•
Expires: 1967-05-01
Abstract
No abstract record available.
Inventors
- 👤 John H Harnley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:39
CPC Classifications
F; F16; F16N; F16N39/00; F16N39/06; F16N3/00; F16N3/10; F16N3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US702495A
Cited
US1009098A
Cited
US1275058A
Cited
US1329398A
Cited
US1708781A
Cited
US1633304A
Cited
US1959404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |