‘A survey of missing patents at the United States Patent Office’ 1993

1994 ◽  
Vol 16 (1) ◽  
pp. 58-59 ◽  
Author(s):  
Jane Myers
1948 ◽  
Vol 13 (2) ◽  
pp. 354 ◽  
Author(s):  
Lawrence C. Kingsland

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