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US2180771A Expired / Lapsed US ⏱️ 0.0 years remaining

Commutator separator undercutting machine

Assignee: Motors Liquidation Co
•
Filing: 1937-04-12
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Granted: 1939-11-21
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Expires: 1957-04-12
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Abstract

No abstract record available.

Inventors

  • 👤 Lora E Poole

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 12:56
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/14; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/304648; Y10T409/30476; Y10T409/305544; Y10T409/3056; Y10T409/30868; Y10T409/309016; Y10T409/309072; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676; Y10T74/00; Y10T74/14; Y10T82/00; Y10T82/25; Y10T82/2564

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1942-11-20 1943-05-22 1943-11-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1946-11-20 1947-05-22 1947-11-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1950-11-20 1951-05-22 1951-11-21 $7700.00 Window Closed / Lapsed

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