US2555302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twist drill
Assignee: FLOYD F COGSDILL
•
Filing: 1947-08-25
•
Granted: 1951-06-05
•
Expires: 1967-08-25
Abstract
No abstract record available.
Inventors
- 👤 Glen H Cogsdill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:08
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/06; B23B51/068; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/455; Y10T408/89; Y10T408/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US496253A
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US589576A
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US1048035A
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GB191321155A
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US1104989A
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GB191515608A
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US1285869A
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US1407328A
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US1409753A
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US2148805A
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US2237901A
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US2360385A
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US2259611A
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US2325973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |