US2690880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectilinear pulverizer
Assignee: Freeport Minerals Co
•
Filing: 1951-04-10
•
Granted: 1954-10-05
•
Expires: 1971-04-10
Abstract
No abstract record available.
Inventors
- 👤 John B Chatelain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:15
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/06; B02C19/061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US982516A
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US2040816A
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US1935344A
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US2032827A
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US2387548A
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US2257907A
Cited
US2392958A
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US2562753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |