US2533108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary toothbrush with lip guard
Assignee: Individual
•
Filing: 1946-08-22
•
Granted: 1950-12-05
•
Expires: 1966-08-22
Abstract
No abstract record available.
Inventors
- 👤 Donald P Grover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:08
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/16; A61C17/22; A61C17/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US559673A
Cited
US1848731A
Cited
US985521A
Cited
US974304A
Cited
US1381553A
Cited
US1517917A
Cited
US1822631A
Cited
FR676771A
Cited
US2209647A
Cited
US2239762A
Cited
US2379049A
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 |