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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 4071058 | Pumping unit for television tubes A two stage pumping unit for evacuating tubes, and in particular television ubes. A primary mechanical pump is air-cooled and is connected in series with an oil diffusion pump. The inlet for the stem of a tube to be evacuated has a sealing ring and between... | 01/31/1978 |
| 4063460 | Method for evacuating and then collecting medium samples in containers sealed by a resilient stopper at substantially atmospheric pressure A method for reducing the pressure in and then collecting medium samples in containers such as test tubes sealed by a resilient stopper at substantially atmospheric pressure, comprising piercing the stopper at or shortly before the time of collection of a... | 12/20/1977 |
| 4040888 | Apparatus for prepressing transparent laminated assemblies Laminated safety glass panels comprising sheets of rigid transparent material, such as glass, polycarbonate, acrylic plastic, polyester and the like, alternating with interlayer materials, such as polyvinyl butyral, polyurethane and the like, are prepress... | 08/09/1977 |
| 4023305 | Device to remove excess water from plant containers Prior to planting, a disc or plate is installed in the bottom of a container. The disc is porous or has a series of slits in various patterns to permit the disc to be trimmed to proper size to fit various sizes and shapes of containers, preferably with an... | 05/17/1977 |
| 4018253 | Home vacuum apparatus for freezer bags It is well known that food to be frozen, if placed in an evacuated container before it is frozen, will better retain the flavor and freshness of the food. However, there is no apparatus available and known to the applicant which permits evacuation of a co... | 04/19/1977 |
| 4015945 | Device for mixing bone cement A device for mixing methyl methacrylate monomer and methyl methacrylate polymer to form bone cement in a hospital operating room includes a bowl-shaped container, a replaceable resilient plastic bowl-shaped liner which fits in the bowl-shaped container, a... | 04/05/1977 |
