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US843896A Expired / Lapsed US ⏱️ 0.0 years remaining

Slot-switch.

Assignee: Lorain Steel Co
•
Filing: 1906-04-11
•
Granted: 1907-02-12
•
Expires: 1926-04-11
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Abstract

No abstract record available.

Inventors

  • 👤 Clarence C Korns

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 09:40
CPC Classifications
E; E01; E01B; E01B7/00; E01B7/10; B; B65; B65G; B65G2812/00; B65G2812/02; B65G2812/02009; B65G2812/02019; B65G2812/02069; B65G2812/02079

Claims Analysis

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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) 1910-02-11 1910-08-13 1911-02-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1914-02-11 1914-08-13 1915-02-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1918-02-11 1918-08-13 1919-02-12 $7700.00 Window Closed / Lapsed

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