US2823404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-piece toothbrush
Assignee: OWENS BRUSH Co
•
Filing: 1955-03-01
•
Granted: 1958-02-18
•
Expires: 1975-03-01
Abstract
No abstract record available.
Inventors
- 👤 Richard M Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:56
CPC Classifications
A; A46; A46B; A46B5/00; A46B5/0095; Y; Y10; Y10T; Y10T403/00; Y10T403/60; Y10T403/606; Y10T403/70; Y10T403/7016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US759490A
Cited
US1131863A
Cited
US1233933A
Cited
CH83854A
Cited
US1897515A
Cited
US2304319A
Cited
FR924427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |