US2299307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for treating materials
Assignee: CORNELL MACHINE CO
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Filing: 1940-02-02
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Granted: 1942-10-20
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Expires: 1960-02-02
Abstract
No abstract record available.
Inventors
- 👤 Cornell Mead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:10
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/24; B01J19/2415; B01J19/2435; C; C09; C09K; C09K5/00; C09K5/08; F; F28; F28D; F28D7/00; F28D7/10; F28D7/106; F28F; F28F13/00; F28F13/06; F28F13/12; F28F13/125; F28F19/00; F28F9/00; F28F9/26; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094
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) | 1945-10-19 | 1946-04-20 | 1946-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-10-19 | 1950-04-20 | 1950-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-10-19 | 1954-04-20 | 1954-10-20 | $7700.00 | Window Closed / Lapsed |