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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 6523194 | Knee wall bed A collapsible and retractable bed structure having design features which permits the bed structure to be folded or collapsed in a manner so as to allow the device to be incorporated into the limited space created between the rafters of a steeply sloping r... | 02/25/2003 |
| 5940911 | Multi-functional bed structure Disclosed is a multi-functional bed structure which includes a main operational control unit and a bed portion. The main operational control unit includes an elevating mechanism which can be controlled to cause the bed portion to move up and down or forwa... | 08/24/1999 |
| 4534076 | Reclining radiographic wall table Reclining radiographic wall table assembly including a wall mounted rack, a wheeled bed table having floor engaging wheels mounted at one end of the table and a rack engaging member at the other for engaging the wall mounted rack, and a control mechanism ... | 08/13/1985 |
| 4466147 | Bed unit A bed unit for saving space wherein a head end portion and a foot end portion of a frame are, respectively, movable along a wall and a floor by a driving mechanism. Thus, preparation for bed making or placing the frame back in the wall can be performed wi... | 08/21/1984 |
| 4288131 | Cabinet-mounted bathroom-scale A retractable cabinet-mounted bathroom-scale including a cabinet or housing mounted to or recessed into a wall and a conventional spring-type bathroom-scale having its rear end pivotally mounted to the housing, with its pivots extending into elongated ver... | 09/08/1981 |
| 4103373 | Portable folding bed cabinet A portable folding bed cabinet having a vertically elongated frame and a pair of horizontally spaced mattress frames that are attached to the vertically elongated frame. The vertically elongated frame has vertical side frame members having tracks along th... | 08/01/1978 |
