US2482237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnating paper making felts with polyvinyl alcohol containing emulsion
Assignee: Orr Felt and Blanket Co
•
Filing: 1946-10-24
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Granted: 1949-09-20
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Expires: 1966-10-24
Abstract
No abstract record available.
Inventors
- 👤 Berglund Orion William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:15
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D21; D21F; D21F1/00; D21F1/0027; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/35; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2484; Y10T442/273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-19 | 1953-03-21 | 1953-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-19 | 1957-03-21 | 1957-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-19 | 1961-03-21 | 1961-09-20 | $7700.00 | Window Closed / Lapsed |