Title | Date | Type | ||
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1 |
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Carl J. Christensen with camera. | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939 | |
2 |
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Carl J. Christensen with camera. | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929 | |
3 |
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Diode Cold Cathode Multipactor tubes....unique in that it has no filament. | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939 | |
4 |
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Farnsworth Iatron Tube. | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939 | |
5 |
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P.T. Farnsworth with his television receiver-1920 or 30. | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929 | |
6 |
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Philo T. Farnsworth as a young man. | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929 | |
7 |
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Philo T. Farnsworth with Image Dissector. | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929 | |
8 |
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Philo with first mobil unit. | 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929 |