Patent US2471604A successfully refreshed from Google Patents.
US2471604A
Expired / Lapsed
US
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Safety device for pneumatic tools
Assignee: Individual
•
Filing: 1947-03-07
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Granted: 1949-05-31
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Expires: 1967-03-07
Abstract
No abstract record available.
Inventors
- 👤 Charles F Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:55
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/04; B25D9/00; B25D9/14; B25D9/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US656981A
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US735719A
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US768898A
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US1117750A
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US1417136A
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US1441017A
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US1482211A
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US1825290A
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US2274091A
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US2338157A
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US2397519A
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US2400207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |