US2648787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-driven toothbrush
Assignee: Individual
•
Filing: 1950-06-24
•
Granted: 1953-08-11
•
Expires: 1970-06-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles B Smithson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:20
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/16; A61C17/22; A61C17/32; A61C17/34; A61C17/3409; A61C17/3472; H; H02; H02K; H02K7/00; H02K7/14; H02K7/145; A61C17/3418; A61C17/3445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US855342A
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US1138926A
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US1425829A
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US1869991A
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US1965382A
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US2095956A
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US2158823A
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US2158738A
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US2187076A
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US2201190A
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US2372731A
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US2431979A
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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) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |