Patent US2481499A successfully refreshed from Google Patents.
US2481499A
Expired / Lapsed
US
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Brush and brush holder for electric drills
Assignee: Millers Falls Co
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Filing: 1945-04-24
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Granted: 1949-09-13
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Expires: 1965-04-24
Abstract
No abstract record available.
Inventors
- 👤 Collura Francesco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:51
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/14; H02K5/143; H02K5/148; H02K2205/00; H02K2205/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US731740A
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US2029171A
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US2234695A
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US2277572A
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US2349401A
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US2373842A
Cited
US2399935A
Cited
US2389941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |