Patent US2302051A successfully refreshed from Google Patents.
US1536288A
Expired / Lapsed
US
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Method of manufacture of rubber compound
Assignee: RUBBER DEV Co
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Filing: 1923-10-27
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Granted: 1925-05-05
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Expires: 1943-10-27
Abstract
No abstract record available.
Inventors
- 👤 Abraham L Freedlander
- 👤 William G Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:24
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/08; C08L; C08L21/00; A; A63; A63B; A63B49/00; A63B49/02; A63B49/08; C08J2321/00
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) | 1928-05-04 | 1928-11-03 | 1929-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-05-04 | 1932-11-03 | 1933-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-05-04 | 1936-11-03 | 1937-05-05 | $7700.00 | Window Closed / Lapsed |