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Richard W. Van Der Drift
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Larkspur, CA, US
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last 30 patents
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Patent Grant
Fastener assembly including a self-locking ratchet nut
Patent number
5,713,708
Issue date
Feb 3, 1998
Richard W. Van derDrift
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Self-locking threaded connecting device
Patent number
5,538,378
Issue date
Jul 23, 1996
Richard W. Van Der Drift
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...