Patent US2135395A successfully refreshed from Google Patents.
US2135395A
Expired / Lapsed
US
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Manufacture of multicolored rubber mixings
Assignee: ERNST FROLLCH
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Filing: 1937-12-14
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Granted: 1938-11-01
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Expires: 1957-12-14
Abstract
No abstract record available.
Inventors
- 👤 Holzapfel Attalus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:45
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/16; B29C48/17; B29C48/175; B29C48/03; B29C48/06; B29C48/07; B29C48/08; B29C48/25; B29C48/36; B29C48/475; B29K; B29K2021/00
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) | 1941-10-31 | 1942-05-02 | 1942-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-31 | 1946-05-02 | 1946-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-31 | 1950-05-02 | 1950-11-01 | $7700.00 | Window Closed / Lapsed |