細節
EDISON, Thomas A. (1847-1931). Document signed ("Thomas Alva Edison"), Orange, New Jersey, 24 August 1888. 1 page, 4to, with receipt stamp in upper right corner.
A CANADIAN PATENT APPLICATION FOR "PHONOGRAM-BLANKS" by "Thomas Alva Edison, of Llewellyn Park, in the County of Essex and State of New Jersey, Inventor." Edison certifies to the Canadian patent authorities in Ottawa that "he has invented new and useful Improvements in Phonogram-Blanks, not known or used by others before his invention thereof, and not being in public use or on sale, for more than one year previous to his application, in Canada, with his consent or allowance as such inventor..." The late 1880s saw an important new direction in his inventing and entrepreneurial career. With the death of his first wife, in 1884 and his remarriage in 1886, Edison relocated to Orange, New Jersey where he opened a new 5-story lab in 1887. "His attention shifted from generating station promotion to experimental work with electric lighting and improvements in the phonograph. During his decade-long involvement with electric lighting, others had begun to exploit the phonograph, his favorite and most original invention, and he sought to compete in making it a popular entertainment for middle-class homes" (Reese V. Jenkins, American National Biography Online).
A CANADIAN PATENT APPLICATION FOR "PHONOGRAM-BLANKS" by "Thomas Alva Edison, of Llewellyn Park, in the County of Essex and State of New Jersey, Inventor." Edison certifies to the Canadian patent authorities in Ottawa that "he has invented new and useful Improvements in Phonogram-Blanks, not known or used by others before his invention thereof, and not being in public use or on sale, for more than one year previous to his application, in Canada, with his consent or allowance as such inventor..." The late 1880s saw an important new direction in his inventing and entrepreneurial career. With the death of his first wife, in 1884 and his remarriage in 1886, Edison relocated to Orange, New Jersey where he opened a new 5-story lab in 1887. "His attention shifted from generating station promotion to experimental work with electric lighting and improvements in the phonograph. During his decade-long involvement with electric lighting, others had begun to exploit the phonograph, his favorite and most original invention, and he sought to compete in making it a popular entertainment for middle-class homes" (Reese V. Jenkins, American National Biography Online).