Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 4593562 | Gas meter A four chamber gas meter comprises a distributor cover and a rotary distributor sliding on the distributor cover. The distributor is driven by a crank which is kinematically connected to the bellows of the gas meter. The hub of the crank is engaged with c... | 06/10/1986 |
| 4422324 | Four chamber direct drive gas meter Disclosed is a four chamber gas meter in which the diaphragms are directly connected to the crank arms on the control shaft.... | 12/27/1983 |
| 4265113 | Sliding valve assembly for use in gas meters or the like For use in gas meters and the like, an improved sliding valve assembly constructed so as to be capable of self restoring the relative sliding motion between a sliding valve and its valve seat when a viscous foreign material tending to accumulate on the va... | 05/05/1981 |
