Patent US1887979A successfully refreshed from Google Patents.
US1887979A
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US
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Fibrous covering and method of making same
Assignee: Flintkote Co
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Filing: 1930-05-29
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Granted: 1932-11-15
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Expires: 1950-05-29
Abstract
No abstract record available.
Inventors
- 👤 Harold L Levin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:14
CPC Classifications
D; D06; D06N; D06N5/00; D06N7/00; D06N7/0005; Y; Y10; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/159; Y10T442/30; Y10T442/3707; Y10T442/3724; Y10T442/3764
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) | 1935-11-15 | 1936-05-16 | 1936-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-15 | 1940-05-16 | 1940-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-15 | 1944-05-16 | 1944-11-15 | $7700.00 | Window Closed / Lapsed |