1957's Plant Patent Counts
month | first | count |
---|
January | PP1,543 | 16 |
February | PP1,559 | 16 |
March | PP1,575 | 11 |
April | PP1,586 | 12 |
May | PP1,598 | 8 |
June | PP1,606 | 6 |
July | PP1,612 | 14 |
August | PP1,626 | 12 |
September | PP1,638 | 8 |
October | PP1,646 | 10 |
November | PP1,656 | 5 |
December | PP1,661 | 11 |
| Total: | 129 |
1956
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1958