US2877820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power hammer
Assignee: Milwaukee Electric Tool Corp
•
Filing: 1956-12-17
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Granted: 1959-03-17
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Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Edward W Ristow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:39
CPC Classifications
B; B25; B25D; B25D11/00; B25D11/06; B25D11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2201023A
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US1106306A
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GB167286A
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US1747842A
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US1796255A
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US1954620A
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US2071281A
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US2233937A
Cited
US2397700A
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US2646100A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |