US2662239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary toothbrush
Assignee: Individual
•
Filing: 1946-11-09
•
Granted: 1953-12-15
•
Expires: 1966-11-09
Abstract
No abstract record available.
Inventors
- 👤 Donald P Grover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:45
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/16; A61C17/22; A61C17/24; A61C17/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB190787A
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FR546106A
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US1522348A
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US1578495A
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US1630164A
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US1703642A
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US1927566A
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US1792188A
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US1949241A
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US2151274A
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US2196667A
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US2206726A
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FR851790A
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US2238317A
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US2379049A
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US2389665A
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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) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |