US2504441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Governor for portable tools
Assignee: Independent Pneumatic Tool Co
•
Filing: 1946-02-16
•
Granted: 1950-04-18
•
Expires: 1966-02-16
Abstract
No abstract record available.
Inventors
- 👤 Walter G Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:31
CPC Classifications
B; B25; B25B; B25B21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US824648A
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US1208421A
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FR618780A
Cited
US1917054A
Cited
US1947009A
Cited
US2096741A
Cited
US2141772A
Cited
US2146046A
Cited
US2246910A
Cited
US2261204A
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 |