US2876489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination system of mixing materials and deep sinter bed charging
Assignee: Mcdowell Co Inc
•
Filing: 1956-11-13
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Granted: 1959-03-10
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Expires: 1976-11-13
Abstract
No abstract record available.
Inventors
- 👤 Robert C Mcdowell
- 👤 Thomas E Ban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:37
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/80; B01F25/90; B01F25/901; B01J; B01J6/00; B01J6/001; B01F29/00; B01F29/25; B01F29/60; B01F33/00; B01F33/26; B01F33/80; B01F33/805; B01F33/8051; C; C22; C22B; C22B1/00; C22B1/14; F; F27; F27B; F27B21/00; F27B21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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CA516007A
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US1926044A
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US2052329A
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DE915072C
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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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |