Patent US2648168A successfully refreshed from Google Patents.
US2648168A
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Suction settle and counterblowing process and apparatus
Assignee: Emhart Manufacturing Co
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Filing: 1950-11-10
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Granted: 1953-08-11
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Expires: 1970-11-10
Abstract
No abstract record available.
Inventors
- 👤 George E Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:51
CPC Classifications
C; C03; C03B; C03B9/00; C03B9/30; C03B9/36; C03B9/3663; C03B9/3627; C03B9/3654; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US744007A
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US1680746A
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US1911119A
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US2063463A
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US2091238A
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US2142954A
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US2198750A
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US2142955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |