Patent US2449823A successfully refreshed from Google Patents.
US2449823A
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US
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Tool bit and holder therefor
Assignee: Individual
•
Filing: 1945-06-07
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Granted: 1948-09-21
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Expires: 1965-06-07
Abstract
No abstract record available.
Inventors
- 👤 Henry M Sheridan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:25
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/1655; B23B27/1603; B23B27/1611; B23B2200/00; B23B2200/16; B23B2200/161; B23B2200/165; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2222; Y10T407/2238; Y10T407/224; Y10T407/2272; Y10T407/2282; Y10T407/2284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1045512A
Cited
US1537957A
Cited
FR813018A
Cited
US2166826A
Cited
US2165571A
Cited
US2150561A
Cited
US2314665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |