Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 5563938 | Subscriber telephone diverter switch An electronic switch (29) for automatically connecting a subscriber telephone instrument (31a, 31b, 31c, or 31d) to either of two telephone signal paths (27 or 28) is disclosed. Outbound calls are selectively routed to one or the other of the two telephon... | 10/08/1996 |
| 5241587 | Polling controller A polling controller (21) for a polling system in which a central station (11) sequentially contacts a series of remote stations (13) in order to transmit data to or receive data from the remote stations is disclosed. The polling controller (21) is connec... | 08/31/1993 |
