US2774443A
Expired / Lapsed
US
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Assignee: Owens Corning
•
Filing: 1953-06-23
•
Granted: 1956-12-18
•
Expires: 1973-06-23
Abstract
No abstract record available.
Inventors
- 👤 Slayter Games
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:07
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/06; B01D46/08; B01D46/023; Y; Y10; Y10S; Y10S55/00; Y10S55/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191220176A
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FR575846A
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US1821202A
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GB414035A
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US2100374A
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US2091137A
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US2251964A
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US2225389A
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US2167236A
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US2409078A
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US2621757A
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US2610702A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |