US2992783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crusher apparatus and methods of crushing aggregates
Assignee: Simplicity Engineering Inc
•
Filing: 1959-02-03
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Granted: 1961-07-18
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Expires: 1979-02-03
Abstract
No abstract record available.
Inventors
- 👤 Hans A Wirth
- 👤 Norman E Briggs
- 👤 Walter R Kittle
- 👤 George B Judson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/14; B02C13/18; B02C13/1807; B02C13/1835; B02C13/1842
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1293654A
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US1405151A
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US1636033A
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GB309854A
Cited
US1857539A
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US1816408A
Cited
DE688169C
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US2207194A
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US2562560A
Cited
US2637502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |