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Drum plotter
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Patent number 5,302,974
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Issue date Apr 12, 1994
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Optrotech Ltd.
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Abraham Gross
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G06 - COMPUTING CALCULATING COUNTING
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Lamp driver scheme
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Patent number 4,849,777
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Issue date Jul 18, 1989
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The Gerber Scientific Instrument Company
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Henry F. Berdat
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Aperture wheel
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Patent number 4,516,842
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Issue date May 14, 1985
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John F. Trombert
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G06 - COMPUTING CALCULATING COUNTING
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Photoplotter
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Patent number 4,500,182
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Issue date Feb 19, 1985
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Nicolet Instrument Corporation
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Robert W. Schumann
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G06 - COMPUTING CALCULATING COUNTING
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Photohead with flashing beam
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Patent number 4,363,539
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Issue date Dec 14, 1982
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Gerber Scientific, Inc.
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Heinz J. Gerber
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G06 - COMPUTING CALCULATING COUNTING
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Optical projection apparatus
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Patent number 4,176,926
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Issue date Dec 4, 1979
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Quest Automation Limited
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David W. Eadie
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G06 - COMPUTING CALCULATING COUNTING
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Photodrafting equipment
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Patent number 4,123,763
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Issue date Oct 31, 1978
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Quest Automation Limited
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David W. Eadie
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G06 - COMPUTING CALCULATING COUNTING
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Cathode ray tube lighthead
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Patent number 3,950,763
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Issue date Apr 13, 1976
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California Computer Products, Inc.
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Robert G. Parks
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G06 - COMPUTING CALCULATING COUNTING
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3927411
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Patent number 3,927,411
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Issue date Dec 16, 1975
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G06 - COMPUTING CALCULATING COUNTING
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3903527
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Patent number 3,903,527
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Issue date Sep 2, 1975
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G06 - COMPUTING CALCULATING COUNTING
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3887796
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Patent number 3,887,796
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Issue date Jun 3, 1975
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G06 - COMPUTING CALCULATING COUNTING
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3848520
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Patent number 3,848,520
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Issue date Nov 19, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3818496
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Patent number 3,818,496
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Issue date Jun 18, 1974
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G06 - COMPUTING CALCULATING COUNTING