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Roy E. VanDerLinden
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West Minster, MD, US
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last 30 patents
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Patent Grant
Variable speed drive--apparatus and method of fabricating the appar...
Patent number
4,682,517
Issue date
Jul 28, 1987
Frederick Manufacturing Company, Inc.
John H. Francis
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Conical drive
Patent number
4,644,810
Issue date
Feb 24, 1987
Frederick Manufacturing Company
Roy E. Vanderlinden
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Multi-speed drive
Patent number
4,515,028
Issue date
May 7, 1985
Frederick Manufacturing Company
Roy E. VanDerLinden
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...