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Richard A. Burkholder
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St. Charles, MO, US
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Patents Grants
last 30 patents
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Patent Grant
Actuated biopsy cutting needle with removable stylet
Patent number
5,183,054
Issue date
Feb 2, 1993
Sherwood Medical Company
Richard A. Burkholder
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Biopsy needle
Patent number
4,793,363
Issue date
Dec 27, 1988
Sherwood Medical Company
Ronald W. Ausherman
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Biopsy device and method
Patent number
4,702,261
Issue date
Oct 27, 1987
Sherwood Medical Company
William D. Cornell
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Syringe and locking device and method of assembling same
Patent number
4,592,746
Issue date
Jun 3, 1986
Sherwood Medical Company
Richard A. Burkholder
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE