Patent US2106808A successfully refreshed from Google Patents.
US2106808A
Expired / Lapsed
US
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Process for producing porous sheets of rubber
Assignee: Dunlop Rubber Co Ltd
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Filing: 1935-11-15
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Granted: 1938-02-01
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Expires: 1955-11-15
Abstract
No abstract record available.
Inventors
- 👤 Murphy Edward Arthur
- 👤 Taylor Stanley Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:37
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/20; B29K; B29K2007/00; B29K2105/00; B29K2105/04
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) | 1941-01-31 | 1941-08-02 | 1942-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-31 | 1945-08-02 | 1946-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-31 | 1949-08-02 | 1950-02-01 | $7700.00 | Window Closed / Lapsed |