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US2948814A Expired / Lapsed US ⏱️ 0.0 years remaining

Compensated light meter power supply

Assignee: General Electric Co
•
Filing: 1956-01-31
•
Granted: 1960-08-09
•
Expires: 1976-01-31
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Abstract

No abstract record available.

Inventors

  • 👤 Theodore A Rich

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 09:12
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/33; G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/52; H01; H01J; H01J40/00; H01J40/02; H01J40/14

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2733357A Cited
US2012573A Cited
US1988349A Cited
US2169405A Cited
US2241743A Cited
US2411440A Cited
US2454169A Cited
US2548755A Cited
US2534668A Cited
US2570665A Cited
GB719899A Cited
US2824239A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1963-08-09 1964-02-08 1964-08-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1967-08-09 1968-02-08 1968-08-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1971-08-09 1972-02-08 1972-08-09 $7700.00 Window Closed / Lapsed

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