1940's Plant Patent Counts

year	first	count
1940	PP352	85
1941	PP437	62
1942	PP499	65
1943	PP564	47
1944	PP611	38
1945	PP649	17
1946	PP666	56
1947	PP722	52
1948	PP774	44
1949	PP818	93
	Total:	559

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