US2573129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage rotary pulverizer
Assignee: Individual
•
Filing: 1949-03-02
•
Granted: 1951-10-30
•
Expires: 1969-03-02
Abstract
No abstract record available.
Inventors
- 👤 Dulait Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:41
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/10; B02C13/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US50975A
Cited
US247206A
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US379943A
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USRE16229E
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DE318755C
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GB156712A
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FR547236A
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US1424225A
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US1963204A
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GB395788A
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DE607709C
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US2100200A
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US2097910A
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US2155697A
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US2217590A
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CH213297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |