Patent DE1040942B successfully refreshed from Google Patents.
US2115896A
Expired / Lapsed
US
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Rubber substitutes
Assignee: Standard Oil Development Co
•
Filing: 1933-12-30
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Granted: 1938-05-03
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Expires: 1953-12-30
Abstract
No abstract record available.
Inventors
- 👤 Peter J Wiezevich
- 👤 Peter J Gaylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:10
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/06; C08F6/12
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) | 1941-05-02 | 1941-11-01 | 1942-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-05-02 | 1945-11-01 | 1946-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-05-02 | 1949-11-01 | 1950-05-03 | $7700.00 | Window Closed / Lapsed |