US1949241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary toothbrush
Assignee: MILTON A BOOM
•
Filing: 1932-07-30
•
Granted: 1934-02-27
•
Expires: 1952-07-30
Abstract
No abstract record available.
Inventors
- 👤 George E Carlson
- 👤 Samuel R Swenson
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; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1532; Y10T74/1537
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) | 1937-02-26 | 1937-08-28 | 1938-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-02-26 | 1941-08-28 | 1942-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-02-26 | 1945-08-28 | 1946-02-27 | $7700.00 | Window Closed / Lapsed |