US2175195A
Expired / Lapsed
US
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Assignee: Owens Corning
•
Filing: 1937-07-30
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Granted: 1939-10-10
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Expires: 1957-07-30
Abstract
No abstract record available.
Inventors
- 👤 Jan S Irvine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:36
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B01D46/12; Y; Y10; Y10S; Y10S55/00; Y10S55/31
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) | 1942-10-09 | 1943-04-10 | 1943-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-09 | 1947-04-10 | 1947-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-09 | 1951-04-10 | 1951-10-10 | $7700.00 | Window Closed / Lapsed |