"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 4988216 | Insulated container insertable into a backpack A thermal container for insertion into a backpack having separate attachment means for securing an integral flap and sealing means for further sealing an opening of said insert container. The container has an open position for receiving carried items and ... | 01/29/1991 |
| 4892665 | Method and press for pressing liquid from thin layers of liquid containing masses A press for pressing liquid from thin layers of liquid-containing masses including a frame, first and second spaced fixed platens on the frame, a movable platen between the first and second fixed platens for dividing the press into first and second operat... | 01/09/1990 |