US2479576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making building material
Assignee: Individual
•
Filing: 1942-03-02
•
Granted: 1949-08-23
•
Expires: 1962-03-02
Abstract
No abstract record available.
Inventors
- 👤 Lewis C Karrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:50
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/90; B01F35/95; Y; Y10; Y10S; Y10S165/00; Y10S165/135; Y10S165/139; Y10S165/14; Y10S165/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1798857A
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US1914877A
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US1740192A
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US1967029A
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US1979704A
Cited
US2204777A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |