Patent US2299593A successfully refreshed from Google Patents.
US2299593A
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Method of making closed cell expanded rubber by internally developed gases
Assignee: Rubatex Products Inc
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Filing: 1937-08-18
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Granted: 1942-10-20
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Expires: 1957-08-18
Abstract
No abstract record available.
Inventors
- 👤 Roberts Dudley
- 👤 Bascom Roger Charles
- 👤 Cooper Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:28
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/08; Y; Y10; Y10S; Y10S264/00; Y10S264/13; Y10S521/00; Y10S521/921
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) | 1945-10-19 | 1946-04-20 | 1946-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-10-19 | 1950-04-20 | 1950-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-10-19 | 1954-04-20 | 1954-10-20 | $7700.00 | Window Closed / Lapsed |