Patent US2655901A successfully refreshed from Google Patents.
US2655901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic hammer
Assignee: Individual
•
Filing: 1951-05-12
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Granted: 1953-10-20
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Expires: 1971-05-12
Abstract
No abstract record available.
Inventors
- 👤 Lowell N Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:45
CPC Classifications
B; B25; B25D; B25D9/00; B25D9/06; B25D9/08; B25D2250/00; B25D2250/295
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB129175A
Cited
DE379665C
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US1352191A
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US1465770A
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US1612783A
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US1923205A
Cited
US2053676A
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US2221100A
Cited
US2472352A
Cited
US2443894A
Cited
US2471604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |