Patent US1317238A successfully refreshed from Google Patents.
US3410409A
Expired / Lapsed
US
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Screening apparatus control
Assignee: Bird Machine Co Inc
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Filing: 1966-01-18
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Granted: 1968-11-12
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Expires: 1986-01-18
Abstract
No abstract record available.
Inventors
- 👤 Earl G Rittenhouse
- 👤 Douglas L G Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:01
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/18; B07B1/20; B01; B01D; B01D29/00; B01D29/11; B01D29/31; B01D29/35; B01D29/356; B01D29/60; B01D29/606; B01D29/76; B01D29/86; B01D29/88; B01D29/94; B01D29/945; B01D37/00; B01D37/04; D; D21; D21D; D21D5/00; D21D5/02; D21D5/06; B01D2201/00; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US930158A
Cited
US2011049A
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US2231568A
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US2320508A
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US2364171A
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US3295374A
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US3312106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |