Patent US3516021A successfully refreshed from Google Patents.
US2532480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power driven toothbrush
Assignee: Individual
•
Filing: 1947-07-26
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Granted: 1950-12-05
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Expires: 1967-07-26
Abstract
No abstract record available.
Inventors
- 👤 John F Cannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:19
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/16; A61C17/22; A61C17/24; A61C17/26; A61C17/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1166482A
Cited
US1023708A
Cited
GB178486A
Cited
US1604500A
Cited
US2162907A
Cited
US2373050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |