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US2205902A Expired / Lapsed US ⏱️ 0.0 years remaining

Reversible fan

Assignee: General Electric Co
•
Filing: 1937-08-12
•
Granted: 1940-06-25
•
Expires: 1957-08-12
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Abstract

No abstract record available.

Inventors

  • 👤 Kenton D Mcmahan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 22:38
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/48; F04D29/483; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/52

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) 1943-06-25 1943-12-25 1944-06-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1947-06-25 1947-12-25 1948-06-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1951-06-25 1951-12-25 1952-06-25 $7700.00 Window Closed / Lapsed

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