US2267597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making artificial bristles
Assignee: Celanese Coatings Co
•
Filing: 1939-09-13
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Granted: 1941-12-23
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Expires: 1959-09-13
Abstract
No abstract record available.
Inventors
- 👤 Harvey A Neville
- 👤 William C Forbes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:15
CPC Classifications
D; D06; D06M; D06M23/00; A; A46; A46B; A46B3/00; Y; Y10; Y10S; Y10S118/00; Y10S118/19
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) | 1944-12-22 | 1945-06-23 | 1945-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-22 | 1949-06-23 | 1949-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-22 | 1953-06-23 | 1953-12-23 | $7700.00 | Window Closed / Lapsed |