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US2544633A
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Expansible mandrel
Assignee: MARY J LE COUNT
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Filing: 1945-09-19
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Granted: 1951-03-06
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Expires: 1965-09-19
Abstract
No abstract record available.
Inventors
- 👤 Count William J Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:17
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/40; B23B31/404; B23B31/4046; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1037; Y10T279/1041; Y10T279/1049; Y10T82/00; Y10T82/26; Y10T82/266; Y10T82/268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US198633A
Cited
US331167A
Cited
US480435A
Cited
AT36305B
Cited
US1186429A
Cited
GB120134A
Cited
US1448528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |