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US2683500A Expired / Lapsed US ⏱️ 0.0 years remaining

Filter unit and method of producing same

Assignee: Metal Textiles Corp
•
Filing: 1951-04-17
•
Granted: 1954-07-13
•
Expires: 1971-04-17
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Abstract

No abstract record available.

Inventors

  • 👤 Goodloe Alfred Minor

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 15:22
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/005; B01D27/02; Y; Y10; Y10T; Y10T29/00; Y10T29/14; Y10T29/147; Y10T29/53; Y10T29/53657

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US1951956A Cited
US1752670A Cited
US1774232A Cited
US1886671A Cited
US1923900A Cited
US2331693A Cited
US2281017A Cited
US2274684A Cited
US2334263A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1957-07-12 1958-01-11 1958-07-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1961-07-12 1962-01-11 1962-07-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1965-07-12 1966-01-11 1966-07-13 $7700.00 Window Closed / Lapsed

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