1950's Plant Patent Counts

year	first	count
1950	PP911	89
1951	PP1,001	58
1952	PP1,059	101
1953	PP1,160	78
1954	PP1,238	101
1955	PP1,339	103
1956	PP1,442	101
1957	PP1,543	129
1958	PP1,672	120
1959	PP1,792	101
	Total:	981

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