US1665309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of vulcanizing rubber
Assignee: PEARL FISHER LAURSEN
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Filing: 1923-12-28
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Granted: 1928-04-10
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Expires: 1943-12-28
Abstract
No abstract record available.
Inventors
- 👤 Laurits A Laursen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/001; B29C; B29C35/00; B29C35/02; B29C35/0227; B29C35/04; B29C35/041; B29C2035/042; 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) | 1931-04-10 | 1931-10-10 | 1932-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-04-10 | 1935-10-10 | 1936-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-04-10 | 1939-10-10 | 1940-04-10 | $7700.00 | Window Closed / Lapsed |