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| Title | : | columbia workshop (018) patent system |
| Air Date | : | 11.28.1936 ( November 28, 1936) |
| Plot | : | + A history of the U. S. Patent system and some of the great inventions it fostered. Also, a very prophetic address by Commissioner Macklin of the Patent Office. |
| File | : | Columbia Workshop 36-11-28 (018) Patent System.mp3 |
| File Size | : | 3.76Mb |
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| Length | : | |
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| Title | : | columbia workshop (018) patent system |
| Air Date | : | 11.28.1936 |
| Plot | : | + A history of the U. S. Patent system and some of the great inventions it fostered. Also, a very prophetic address by Commissioner Macklin of the Patent Office. |
| File | : | Columbia Workshop 36-11-28 (018) Patent System.mp3 |
| File Size | : | 3.76Mb |
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