US2587792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for rounding the tips of bristles
Assignee: Individual
•
Filing: 1947-08-13
•
Granted: 1952-03-04
•
Expires: 1967-08-13
Abstract
No abstract record available.
Inventors
- 👤 Sivers Carl Henric Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:48
CPC Classifications
A; A46; A46D; A46D1/00; A46D1/02; A46D1/0276; A46D1/0284; A46D1/0292; A46D9/00; A46D9/02; Y; Y10; Y10S; Y10S264/00; Y10S264/66; Y10S425/00; Y10S425/806
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US917811A
Cited
GB191417492A
Cited
US1258735A
Cited
US1443082A
Cited
US2050416A
Cited
US2294480A
Cited
US2337603A
Cited
US2426328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |