US2331275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making variegated hard surface coverings
Assignee: Armstrong World Industries Inc
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Filing: 1940-10-03
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Granted: 1943-10-05
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Expires: 1960-10-03
Abstract
No abstract record available.
Inventors
- 👤 Arlington C Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:35
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0028; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4838
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) | 1946-10-04 | 1947-04-05 | 1947-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-10-04 | 1951-04-05 | 1951-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-10-04 | 1955-04-05 | 1955-10-05 | $7700.00 | Window Closed / Lapsed |