Patent US2368699A successfully refreshed from Google Patents.
US2368699A
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Apparatus and method for treating material in a pneumatic current
Assignee: Individual
•
Filing: 1942-03-23
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Granted: 1945-02-06
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Expires: 1962-03-23
Abstract
No abstract record available.
Inventors
- 👤 Gerald D Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:08
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; F; F26; F26B; F26B17/00; F26B17/10; F26B17/107; F26B3/00; F26B3/02; F26B3/10
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) | 1948-02-06 | 1948-08-07 | 1949-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-06 | 1952-08-07 | 1953-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-06 | 1956-08-07 | 1957-02-06 | $7700.00 | Window Closed / Lapsed |