Patent US3003370A successfully refreshed from Google Patents.
US3003370A
Expired / Lapsed
US
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Method of making rock bit cutter
Assignee: Chicago Pneumatic Tool Co LLC
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Filing: 1960-01-19
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Granted: 1961-10-10
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Expires: 1980-01-19
Abstract
No abstract record available.
Inventors
- 👤 Jr John B Coulter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:55
CPC Classifications
B; B21; B21K; B21K5/00; B21K5/02; B21K5/06; B23; B23P; B23P15/00; B23P15/28; Y; Y10; Y10S; Y10S76/00; Y10S76/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |