Patent US2444468A successfully refreshed from Google Patents.
US2444468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linoleum type surface covering
Assignee: Armstrong World Industries Inc
•
Filing: 1943-08-17
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Granted: 1948-07-06
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Expires: 1963-08-17
Abstract
No abstract record available.
Inventors
- 👤 Paul O Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:34
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0005; D06N7/006; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2361; Y10T442/2762; Y10T442/277; Y10T442/2828; Y10T442/2852
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317854A
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US1843357A
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US1793667A
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US1765589A
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US1835741A
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GB445891A
Cited
US2103293A
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US2319809A
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US2316746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |