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US2853020A Expired / Lapsed US ⏱️ 0.0 years remaining

Shaft seal

Assignee: Fuller Co
•
Filing: 1955-08-10
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Granted: 1958-09-23
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Expires: 1975-08-10
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Abstract

No abstract record available.

Inventors

  • 👤 Paul M Hollinger
  • 👤 Joseph E Muller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:29
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F04; F04C; F04C27/00; F04C27/008; F04C27/009

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2133524A Cited
US2404783A Cited
US2714024A Cited
US2750894A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1961-09-22 1962-03-24 1962-09-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1965-09-22 1966-03-24 1966-09-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1969-09-22 1970-03-24 1970-09-23 $7700.00 Window Closed / Lapsed

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