Patent US2473286A successfully refreshed from Google Patents.
US2473286A
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Flexible shaft machine
Assignee: MALL TOOL Co
•
Filing: 1946-04-01
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Granted: 1949-06-14
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Expires: 1966-04-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Mall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:46
CPC Classifications
B; B24; B24B; B24B27/00; B24B27/027; F; F16; F16C; F16C1/00; F16C1/02; F16C1/08; Y; Y10; Y10S; Y10S464/00; Y10S464/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172593A
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US796637A
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US1592550A
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US1714865A
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US1751174A
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US2204007A
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US2235189A
Cited
US2322877A
Cited
US2278095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |