US2953359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating pulverulent material
Assignee: Johnson March Corp
•
Filing: 1958-10-16
•
Granted: 1960-09-20
•
Expires: 1978-10-16
Abstract
No abstract record available.
Inventors
- 👤 George A Mau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:41
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/70; B01F25/72; B01F25/721; B22; B22C; B22C5/00; B22C5/04; B22C5/0409; B22C5/0463
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US655552A
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US730564A
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US1004908A
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US1177666A
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US2071846A
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US2460605A
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DE812908C
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US2746375A
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US2805051A
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US2859946A
Cited
US2862511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |