Patent US2634113A successfully refreshed from Google Patents.
US2634113A
Expired / Lapsed
US
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Combined drill and expansible breaker mechanism
Assignee: Joy Manufacturing Co
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Filing: 1948-03-10
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Granted: 1953-04-07
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Expires: 1968-03-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Joy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:23
CPC Classifications
E; E21; E21C; E21C37/00; E21C37/06; E21C37/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1519147A
Cited
US1191992A
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US1273869A
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GB129066A
Cited
FR504776A
Cited
US1630470A
Cited
US2151328A
Cited
US2233205A
Cited
US2253941A
Cited
US2438637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |