Patent US2407471A successfully refreshed from Google Patents.
US2407471A
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Rotary tool adapter
Assignee: M R HARDING
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Filing: 1944-12-11
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Granted: 1946-09-10
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Expires: 1964-12-11
Abstract
No abstract record available.
Inventors
- 👤 Burk Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:43
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/06; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17957; Y10T279/17965; Y10T279/34; Y10T279/3481; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/5383; Y10T408/00; Y10T408/94; Y10T408/95; Y10T408/957
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-09-09 | 1950-03-11 | 1950-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-09-09 | 1954-03-11 | 1954-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-09-09 | 1958-03-11 | 1958-09-10 | $7700.00 | Window Closed / Lapsed |