Patent US2417645A successfully refreshed from Google Patents.
US2417645A
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US
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Rotary abrading tool
Assignee: Individual
•
Filing: 1944-08-24
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Granted: 1947-03-18
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Expires: 1964-08-24
Abstract
No abstract record available.
Inventors
- 👤 Elisha W Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:48
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/02; B24D13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US294847A
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US533833A
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US1963247A
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US2070734A
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US2034576A
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US2027863A
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US2087105A
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US2124114A
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US2146284A
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US2203788A
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US2355667A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |