Patent US3029951A successfully refreshed from Google Patents.
US3029951A
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US
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Screening device
Assignee: Bird Machine Co Inc
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Filing: 1958-09-24
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Granted: 1962-04-17
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Expires: 1978-09-24
Abstract
No abstract record available.
Inventors
- 👤 Madison M Cannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:34
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/17; B01D29/23; B01D29/25; B01D29/50; B01D29/52; B01D29/54; B01D29/88; B01D29/90; B01D29/908; 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)
US338246A
Cited
US517114A
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GB191111163A
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US1696354A
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US1954146A
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US2332965A
Cited
US2631728A
Cited
US2835173A
Cited
US2901763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |