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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 5827056 | Device and method for improving strip tracking in a continuous heating furnace A method and tracking system for optimizing the tracking of a metal strip traveling over a plurality of crowned rolls in a continuous heating system designed to track a design strip having a design strip temperature profile. The invention attains an actua... | 10/27/1998 |
| 5770838 | Induction heaters to improve transitions in continuous heating system, and method A heating system and method for heating a metal strip to within a predetermined temperature tolerance range while the metal strip serially travels through a heating system. The heating system has at least one preceding heating section, at least one induct... | 06/23/1998 |
| 4149703 | Apparatus for quenching a heated metal plate An apparatus for quenching a heated metal plate moving and restrained in a plane has upper and lower rolls which engage the top and bottom surfaces of the plate. Jets of quench fluid are located between the rolls and direct quench fluid onto the top and b... | 04/17/1979 |
| 3932238 | Method and apparatus for quenching pipe A pipe is heated with its longitudinal axis positioned vertically and then lowered from a furnace. As the pipe emerges from the furnace, it engages an inner ring of rollers and an outer ring of rollers which press against the hot pipe to shape it into a r... | 01/13/1976 |
