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US3433952A Expired / Lapsed US ⏱️ 0.0 years remaining

Spectrophotofluorometer having correction means providing substantially equal energy effects in response at different excitation wavelengths

Assignee: American Instrument Co Inc
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Filing: 1966-07-18
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Granted: 1969-03-18
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Expires: 1986-07-18
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Abstract

No abstract record available.

Inventors

  • 👤 Hugh K Howerton

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 12:00
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/44; G01J3/4406

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2971429A Cited
US3148278A Cited
US3084253A Cited
US3161771A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1972-03-17 1972-09-16 1973-03-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1976-03-17 1976-09-16 1977-03-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1980-03-17 1980-09-16 1981-03-18 $7700.00 Window Closed / Lapsed

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