Patent US1854933A successfully refreshed from Google Patents.
US1854933A
Expired / Lapsed
US
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Ornamentation of surface coverings
Assignee: Armstrong World Industries Inc
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Filing: 1928-08-07
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Granted: 1932-04-19
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Expires: 1948-08-07
Abstract
No abstract record available.
Inventors
- 👤 Samuel H Hartman
- 👤 Charles F Humphreys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:50
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0028; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/168; Y10T428/22; Y10T428/24; Y10T428/24479; Y10T428/24612
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) | 1935-04-19 | 1935-10-19 | 1936-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-19 | 1939-10-19 | 1940-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-19 | 1943-10-19 | 1944-04-19 | $7700.00 | Window Closed / Lapsed |