Patent US2698142A successfully refreshed from Google Patents.
US2698142A
Expired / Lapsed
US
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Bowl mill with novel bowl and air flow directing means
Assignee: Combustion Engineering Inc
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Filing: 1953-02-03
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Granted: 1954-12-28
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Expires: 1973-02-03
Abstract
No abstract record available.
Inventors
- 👤 Crites Joe
- 👤 Bogot Alexander
- 👤 Lorenz J Andresen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:04
CPC Classifications
B; B02; B02C; B02C15/00; B02C15/001; B02C15/04; B02C2015/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |