US2437395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating granular materials
Assignee: Individual
•
Filing: 1943-07-23
•
Granted: 1948-03-09
•
Expires: 1963-07-23
Abstract
No abstract record available.
Inventors
- 👤 Magnusson Folke Gosta Robert
- 👤 Oholm Gustav Valdemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:51
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/12; F26B17/122; F26B17/02; F26B17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE110574C
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US299683A
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US532553A
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FR615183A
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DE584677C
Cited
GB189510357A
Cited
GB189902351A
Cited
US707384A
Cited
US1238589A
Cited
FR537678A
Cited
US2119916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-09 | 1951-09-08 | 1952-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-09 | 1955-09-08 | 1956-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-09 | 1959-09-08 | 1960-03-09 | $7700.00 | Window Closed / Lapsed |