US2387833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric acetals and process of making same
Assignee: Pro Phy Lac Tic Brush Co
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Filing: 1942-10-30
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Granted: 1945-10-30
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Expires: 1962-10-30
Abstract
No abstract record available.
Inventors
- 👤 Dahle Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:57
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; C08F; C08F8/00; C08F8/48; C08F2810/00; C08F2810/30
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) | 1948-10-29 | 1949-04-30 | 1949-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-29 | 1953-04-30 | 1953-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-29 | 1957-04-30 | 1957-10-30 | $7700.00 | Window Closed / Lapsed |