Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| D653872 | Convertible bunk bed and loft set | 02/14/2012 |
| D641566 | Loft bunk | 07/19/2011 |
| D608562 | Bed frame | 01/26/2010 |
| D608561 | Bed frame | 01/26/2010 |
| D608560 | Bed frame | 01/26/2010 |
| D607230 | Bed frame | 01/05/2010 |
| D596872 | Round bed | 07/28/2009 |
| D587919 | Furniture | 03/10/2009 |
| D583586 | Bed system | 12/30/2008 |
| D530938 | Changing table | 10/31/2006 |
| D513370 | Loft bed | 01/03/2006 |
| D495519 | Bed | 09/07/2004 |
| D495160 | Bed | 08/31/2004 |