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US2980345A
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Ultrasonic apparatus and methods of comminution
Assignee: Allis Chalmers Corp
•
Filing: 1958-02-10
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Granted: 1961-04-18
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Expires: 1978-02-10
Abstract
No abstract record available.
Inventors
- 👤 Dimitri B Kececioglu
- 👤 Robert T Baugh
- 👤 Thomas R Hoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:10
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1738565A
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US1734975A
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US2225797A
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US2524573A
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US2535680A
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US2617874A
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US2715383A
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US2709552A
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US2738172A
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US2725219A
Cited
US2889580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |