Gilfillan, S. Colum, n. 1889 |
An attempt to measure the rise of American inventing and the decline of patenting / S.C. Gilfillan |
In: Inventing and patenting. Gilfillan, S. Colum n. 1889. p. 201-214 |
Gilfillan, S. Colum, n. 1889 |
Dr. Gilfillan's reply |
In: Inventing and patenting. Gilfillan, S. Colum n. 1889. p. 227-234 |
Gilfillan, S. Colum, n. 1889 |
Inventing and patenting : controversy / S. Colum Gilfillan versus Jacob Schmookler, I. Jordan Kunik |
In: Technology and culture Vol. 1 (1960), p. 201-234 |