US2867830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush head structure
Assignee: Individual
•
Filing: 1957-09-05
•
Granted: 1959-01-13
•
Expires: 1977-09-05
Abstract
No abstract record available.
Inventors
- 👤 Alexander R Usdavin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:37
CPC Classifications
A; A46; A46B; A46B11/00; A46B11/001; A46B11/002; A46B11/0024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US967686A
Cited
US1197210A
Cited
US1396630A
Cited
US1638054A
Cited
US1681836A
Cited
US1736146A
Cited
GB495856A
Cited
US2292939A
Cited
US2218290A
Cited
CH264557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |