Patent US 4039899A

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Patent number US 4039899A (click link for details and documents via Google Patents)
Title Geometry and focus correction circuit
Inventors Carl Battjes, Harvey Leon Golladay, Michael Lawrence Rieger, Binoy Anthony Rosario, Ken Schlotzhauer
Company Tektronix Inc
Filing date 1976-05-03
Grant date 1977-08-02