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US2522002A Expired / Lapsed US ⏱️ 0.0 years remaining

Heater unit

Assignee: S BLICKMAN Inc
•
Filing: 1946-10-15
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Granted: 1950-09-12
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Expires: 1966-10-15
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Abstract

No abstract record available.

Inventors

  • 👤 Stephan Wolfgang

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 13:29
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/08

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

CH80951A Cited
US2277439A Cited
US2107173A Cited
US2288510A Cited
US2306979A Cited
US2424412A Cited
US2430194A Cited
US2448617A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1953-09-11 1954-03-13 1954-09-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1957-09-11 1958-03-13 1958-09-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1961-09-11 1962-03-13 1962-09-12 $7700.00 Window Closed / Lapsed

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