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US2816973A Expired / Lapsed US ⏱️ 0.0 years remaining

Float operated switch

Assignee: F AND M SCHAEFER BREWING CO
•
Filing: 1954-04-01
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Granted: 1957-12-17
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Expires: 1974-04-01
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Abstract

No abstract record available.

Inventors

  • 👤 Beck Otto
  • 👤 Bruce W Hackstaff

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 15:40
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/18; H01H35/186

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US594403A Cited
USRE20380E Cited
US660119A Cited
US744817A Cited
US997230A Cited
CH68570A Cited
US1146599A Cited
US1297938A Cited
US1922362A Cited
US1962125A Cited
US2270784A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1960-12-16 1961-06-17 1961-12-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1964-12-16 1965-06-17 1965-12-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1968-12-16 1969-06-17 1969-12-17 $7700.00 Window Closed / Lapsed

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