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 |
| 5268141 | Iron based alloy having low contents of aluminum silicon, magnesium, calcium, oxygen, sulphur, and nitrogen An iron base alloy is disclosed which consists essentially of 0.005%-7.0% of aluminum, 0.005-7.0% of silicon, 0.0001%-0.005% of magnesium, 0.0001-0.005% of calcium, 0.001%-0.002% of oxygen, 0.0001-0.002% of sulphur, and 0.0005%-0.003% of nitrogen, less th... | 12/07/1993 |
| 4999053 | Method of producing an iron-, cobalt- and nickel-base alloy having low contents of sulphur, oxygen and nitrogen A method of producing an alloy containing at least one major ingredient selected from the group consisting of iron (Fe), cobalt (Co), and Nickel (Ni) and having low contents of sulphur, oxygen, and nitrogen, comprises steps of: (a) holding a molten alloy ... | 03/12/1991 |
| 4704997 | Device for preventing abnormal flow of gas fuel from gas fuel injector of diesel engine A device for preventing abnormal flow of gas fuel from a gas fuel injector of a diesel engine. The device has a pipe for supplying a pressurized gas fuel, a fuel injector including a passage connected to the pipe and leading to fuel injection nozzle ports... | 11/10/1987 |
| 4519728 | Floating offshore structure A floating offshore structure which is moored at a fixed position on the sea by means of mooring hawsers and anchors connected to the ends thereof respectively for conducting a submarine excavating operation from a deck of the structure. The structure inc... | 05/28/1985 |
| 4394813 | Exhaust gas heat recovery system in internal combustion engine An exhaust gas heat recovery system wherein: the system comprises an exhaust gas economizer having of heat transfer sections including a preheating section, an evaporating section and a superheating section, a feed water heater, a steam separation drum, a low ... | 07/26/1983 |
| 4345533 | Semi-submerged ship Disclosed is a semi-submerged ship comprising at least two lower hulls always located below the surface of water and arranged substantially in parallel to each other with respect to the direction of advance, struts mounted substantially vertically on the ... | 08/24/1982 |
