Hollow needle
First Claim
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8. A CYLINDRICAL HOLLOW NEEDLE HAVING A BEVELED FRONT FACE AND HAVING A LUMEN OF UNIFORM CROSS SECTION, SAID FRONT FACE PROVIDING A LUMEN OPENING HAVING CROSS SECTIONAL DIMENSIONS NO SMALLER THAN THE CROSS SECTION OF SAID LUMEN, SAID FACE PROVIDING A HEEL SURFACE BEHIND THE LUMEN OPENING THEREIN, SAID HEEL SURFACE BEING DISHED TO PROVIDE A SMOOTH-SURFACED EXTERNAL RECESS AND BLENDING SMOOTHLY AND GRADUALLY INTO THE REAR CYLINDRICAL SURFACE OF SAID NEEDLE BEYOND THE PERIMETER OF SAID BEVELED FACE.
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8 Claims
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8. A CYLINDRICAL HOLLOW NEEDLE HAVING A BEVELED FRONT FACE AND HAVING A LUMEN OF UNIFORM CROSS SECTION, SAID FRONT FACE PROVIDING A LUMEN OPENING HAVING CROSS SECTIONAL DIMENSIONS NO SMALLER THAN THE CROSS SECTION OF SAID LUMEN, SAID FACE PROVIDING A HEEL SURFACE BEHIND THE LUMEN OPENING THEREIN, SAID HEEL SURFACE BEING DISHED TO PROVIDE A SMOOTH-SURFACED EXTERNAL RECESS AND BLENDING SMOOTHLY AND GRADUALLY INTO THE REAR CYLINDRICAL SURFACE OF SAID NEEDLE BEYOND THE PERIMETER OF SAID BEVELED FACE.
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Current AssigneeBrian E. Baldwin, Ray S. Lindenmeyer
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Original AssigneeBrian E. Baldwin, Ray S. Lindenmeyer
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InventorsBaldwin, Brian E., Lindenmeyer, Ray S.
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Application NumberUS04/004,985Time in Patent Office1,070 DaysField of SearchUS Class Current604/274CPC Class CodesA61M 5/3286 Needle tip design, e.g. for...
