Patent US2465592A successfully refreshed from Google Patents.
US2465592A
Expired / Lapsed
US
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Process for the treatment of scrap leather
Assignee: Individual
•
Filing: 1947-03-17
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Granted: 1949-03-29
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Expires: 1967-03-17
Abstract
No abstract record available.
Inventors
- 👤 Karlson Emil
- 👤 Harold E Karlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:25
CPC Classifications
C; C11; C11B; C11B13/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74; Y10; Y10S; Y10S530/00; Y10S530/859
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |