Patent US1978030A successfully refreshed from Google Patents.
US1978030A
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US
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Method of making sheet rubber material
Assignee: Goodrich Corp
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Filing: 1933-10-31
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Granted: 1934-10-23
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Expires: 1953-10-31
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Ritchie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:55
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/12; B29D35/122; A; A43; A43D; A43D8/00; A43D8/02; A43D8/16; A43D8/22; B29K; B29K2021/00; Y; Y10; Y10S; Y10S264/00; Y10S264/59; Y10S264/66
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) | 1937-10-22 | 1938-04-23 | 1938-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-22 | 1942-04-23 | 1942-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-22 | 1946-04-23 | 1946-10-23 | $7700.00 | Window Closed / Lapsed |