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US2159361A Expired / Lapsed US ⏱️ 0.0 years remaining

Electric furnace

Assignee: OI Glass Inc
•
Filing: 1936-11-30
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Granted: 1939-05-23
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Expires: 1956-11-30
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Abstract

No abstract record available.

Inventors

  • 👤 Flavius W Atkinson
  • 👤 Slayter Games
  • 👤 John H Thomas
  • 👤 George M Lannan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 17:53
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/08; C03B37/09; C03B37/092; C03B37/091; C03B5/00; C03B5/02; C03B5/027; C03B5/033; C03B5/16; C03B5/225

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) 1942-05-22 1942-11-21 1943-05-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1946-05-22 1946-11-21 1947-05-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1950-05-22 1950-11-21 1951-05-23 $7700.00 Window Closed / Lapsed

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