US2471043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating waste rubber, etc.
Assignee: BENJAMIN EPSTEIN
•
Filing: 1945-06-19
•
Granted: 1949-05-24
•
Expires: 1965-06-19
Abstract
No abstract record available.
Inventors
- 👤 Edward L Schenck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:21
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/02; H; H01; H01B; H01B15/00; H01B7/00; H01B7/36; B29B17/04; B29B17/0404; B29B2017/0213; B29B2017/0217; B29B2017/0224; B29B2017/0231; B29B2017/0424; B29B2017/0484; B29K; B29K2021/00; B29K2105/00; B29K2105/06; B29K2105/12; B29L; B29L2030/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52; Y02W30/62; Y02W30/82; Y10; Y10S; Y10S241/00; Y10S241/31
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |