US2422994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twist drill
Assignee: Carboloy Co Inc
•
Filing: 1944-01-03
•
Granted: 1947-06-24
•
Expires: 1964-01-03
Abstract
No abstract record available.
Inventors
- 👤 George F Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:11
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/22; B22F3/227; B21; B21C; B21C23/00; B21C23/02; B21C23/04; B21C23/14; B21C23/147; B21C25/00; B22F3/20; B22F5/00; B22F5/10; B23; B23B; B23B51/00; B23B51/06; B23B51/063; B22F2005/001; B22F2005/004; B22F2998/00; Y; Y10; Y10S; Y10S408/00; Y10S408/705; Y10S425/00; Y10S425/217; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/455
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US589576A
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GB191412139A
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US1208164A
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US1814820A
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US1738665A
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US2164397A
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US2289787A
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US2148805A
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US2271960A
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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) | 1950-06-23 | 1950-12-23 | 1951-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-23 | 1954-12-23 | 1955-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-23 | 1958-12-23 | 1959-06-24 | $7700.00 | Window Closed / Lapsed |