Patent US326909A successfully refreshed from Google Patents.
Patent US2437395A successfully refreshed from Google Patents.
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 23:33
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/12; F26B17/122; F26B17/02; F26B17/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE110574C
Cited
US299683A
Cited
US532553A
Cited
FR615183A
Cited
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 |