US2460546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating materials
Assignee: CH Wheeler Manufacturing Co
•
Filing: 1942-10-01
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Granted: 1949-02-01
•
Expires: 1962-10-01
Abstract
No abstract record available.
Inventors
- 👤 Nicholas N Stephanoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:53
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01D; B01D1/00; B01D1/16; B01D1/18; B01J2/00; B01J2/02; B01J2/04; Y; Y10; Y10S; Y10S159/00; Y10S159/23; Y10S47/00; Y10S47/12; Y10S524/00; Y10S524/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1830174A
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US2101635A
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US2188506A
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US2202481A
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US2297726A
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US2253319A
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US2290393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-01 | 1952-08-02 | 1953-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-01 | 1956-08-02 | 1957-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-01 | 1960-08-02 | 1961-02-01 | $7700.00 | Window Closed / Lapsed |