US1833967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothbrush
Assignee: Individual
•
Filing: 1930-02-10
•
Granted: 1931-12-01
•
Expires: 1950-02-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Emil H Groff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:02
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)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-11-30 | 1935-06-01 | 1935-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-11-30 | 1939-06-01 | 1939-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-11-30 | 1943-06-01 | 1943-12-01 | $7700.00 | Window Closed / Lapsed |