Patent US3108209A successfully refreshed from Google Patents.
Patent US3568289A successfully refreshed from Google Patents.
US3568289A
Expired / Lapsed
US
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Method for building card screens
Assignee: R B JENKINS AND CO
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Filing: 1968-07-11
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Granted: 1971-03-09
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Expires: 1988-07-11
Abstract
Abstract AT LEAST ONE BAR SUB-ASSEMBLY IS FORMED COMPRISING A SERIES OF SPACED PARALLEL BARS SECURED BETWEEN A PAIR OF END WALLS, THE SUB-ASSEMBLY IS THEN POSITIONED BETWEEN A PAIR OF SIDE RIBS AND FASTENED THERETO TO FORM THE COMPLETED CARD SCREEN.
Inventors
- 👤 Robert B Jenkins Sr
- 👤 Robert B Jenkins Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:33
CPC Classifications
D; D01; D01G; D01G15/00; D01G15/02; D01G15/12; D01G15/34; Y; Y10; Y10S; Y10S269/00; Y10S269/909; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/4962; Y10T29/49826; Y10T29/49895; Y10T29/49998
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |