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Patent US2453136A successfully refreshed from Google Patents.
US2453136A
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Chip breaking drill chuck
Assignee: Ex-Cell-O Corp
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Filing: 1943-04-26
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Granted: 1948-11-09
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Expires: 1963-04-26
Abstract
No abstract record available.
Inventors
- 👤 John W Karweit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:08
CPC Classifications
B; B23; B23B; B23B47/00; B23B47/34; Y; Y10; Y10S; Y10S29/00; Y10S29/052; Y10T; Y10T408/00; Y10T408/23; Y10T408/73; Y10T74/00; Y10T74/18; Y10T74/18024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US463973A
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US627074A
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US800894A
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US1196656A
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US1523629A
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US1659238A
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US2105762A
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US2328542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |