US2261847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for heating and vulcanizing rubber and similar matter
Assignee: Individual
•
Filing: 1936-10-26
•
Granted: 1941-11-04
•
Expires: 1956-10-26
Abstract
No abstract record available.
Inventors
- 👤 Dufour Rene
- 👤 Leduc Henri Auguste
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:57
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/72; B29C35/00; B29C35/02; B29C35/12; B29K; B29K2021/00; Y; Y10; Y10S; Y10S264/00; Y10S264/46; Y10S524/00; Y10S524/925; Y10S524/926
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) | 1944-11-03 | 1945-05-05 | 1945-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-03 | 1949-05-05 | 1949-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-03 | 1953-05-05 | 1953-11-04 | $7700.00 | Window Closed / Lapsed |