1981's Plant Patent Counts

monthfirstcount
JanuaryPP4,61224
FebruaryPP4,63621
MarchPP4,65724
AprilPP4,68124
MayPP4,70524
JunePP4,72922
JulyPP4,7524
AugustPP4,7566
SeptemberPP4,76210
OctoberPP4,77212
NovemberPP4,78412
 Total:183

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