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US3712984A Expired / Lapsed US ⏱️ 0.0 years remaining

Instrument for transmitting ultraviolet radiation to a limited area

Assignee: Canrad Precision Industries Inc
•
Filing: 1971-03-15
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Granted: 1973-01-23
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Expires: 1991-03-15
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Abstract

Abstract AN INSTRUMENT FOR TRANSMITTING ULTRAVIOLET RADIATION TO A LIMITED AREA WITHIN A CONFINED SPACE, SUCH AS A DENTAL INSTRUMENT FOR TREATING A LIMITED AREA WITHIN THE HUMAN MOUTH. THE INSTRUMENT IS HAND-HELD AND INCLUDES A SUPPORT ON WHICH A SOURCE OF ULTRAVIOLET LIGHT IS MOUNTED. AN ELONGATED LIGHT-DIRECTING STRUCTURE IS CARRIED BY THE SUPPORT AND EXTENDS FROM THE LIGHT SOURCE BEYOND THE SUPPORT SO AS TO HAVE A FREE END WHICH MAY BE PLACED IN THE MOUTH FOR DIRECTING THE LIGHT TO A LIMITED AREA FOR APPLYING ULTRAVIOLET ENERGY THERETO. A MANUALLY OPEABLE CONTROL IS PROVIDED TO BE MANIPULATED BY THE OPERATOR FOR CONTROLLING THE TRANSMISSION LIGHT AND THUS CONTROLLING THE APPLICATION OF ULTRAVIOLET ENERGY.

Inventors

  • 👤 O Lienhard

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 04:52
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/003; A61C19/004; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/123; G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0005; A61N; A61N5/00; A61N5/06; A61N5/0601; A61N5/0603; A61N2005/0606

Claims Analysis

Total Claims: 0
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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) 1976-01-23 1976-07-24 1977-01-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-01-23 1980-07-24 1981-01-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-01-23 1984-07-24 1985-01-23 $7700.00 Window Closed / Lapsed

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