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Multichannel illumination system for controlling the intensity of illumination in each channel in response to selected frequency band of an input control signal

US 3,222,574 A · Inventors: SILVESTRI JR GEORGE

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Granted December 7, 1965. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by December 7, 1982.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledNovember 22, 1963
GrantedDecember 7, 1965
Term endedDecember 7, 1982
Application number—
Classification (CPC)A63J17/00
Length6 pages

Timeline

Timeline From USPTO dates

1964196619681970197219741976197819801982Application filedNov 22, 1963Patent grantedDec 7, 1965Term endedDec 7, 1982

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Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

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