371 date

in suk song (nata@samyang.co.kr)
Wed, 09 Jun 1999 15:50:20 +0900

What's the meaning of 371 date in front page of US patent?
Any help will be greatly appreciated.

in suk song

Associate Scientist

SamYang Medical Research R&D Center
63-2,Hwaam,Yusung,Taejeon,South Korea
zip:305-348
tel.82.42.865.8258
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email: nata@samyang.co.kr