Patent US2644972A successfully refreshed from Google Patents.
US2644972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder for electrically operated toothbrushes and the like
Assignee: Individual
•
Filing: 1948-05-13
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Granted: 1953-07-14
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Expires: 1968-05-13
Abstract
No abstract record available.
Inventors
- 👤 George B Ubel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:36
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/16; A61C17/22; A61C17/32; A61C17/34; A61C17/3409; A61C17/3445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1831327A
Cited
US2112658A
Cited
US2187077A
Cited
US2319205A
Cited
US2239870A
Cited
US2307431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |