Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| D649332 | Split dog image | 11/29/2011 |
| D639029 | Shoe | 06/07/2011 |
| D630825 | Shoe | 01/18/2011 |
| D630005 | Footwear | 01/04/2011 |
| D626729 | Shoe cover | 11/09/2010 |
| D622038 | Footwear | 08/24/2010 |
| D622039 | Footwear | 08/24/2010 |
| D590137 | Shoe | 04/14/2009 |
| D588788 | High heel bunny slipper | 03/24/2009 |
| D587435 | Shoe | 03/03/2009 |
| D586982 | Footwear | 02/24/2009 |
| D581139 | Sport shoe | 11/25/2008 |
| D564186 | Sport shoe | 03/18/2008 |
| D564185 | Sport shoe | 03/18/2008 |
| D560331 | Sport shoe | 01/29/2008 |
| D552831 | Walking shoe | 10/16/2007 |
| D547031 | Flag designs for shoes | 07/24/2007 |
| D539013 | Shoe with reptile | 03/27/2007 |
| D530889 | Shoe | 10/31/2006 |
| D520717 | Shoe with snake | 05/16/2006 |
| 6957504 | Footwear with surrounding ornamentation A shoe upper has an outside surface having a first ornamental theme, the first theme being formed in three dimensions, with artwork coincident with the three dimensional effect. An outsole below the shoe upper includes a bottom surface for engagement with a walking ... | 10/25/2005 |
| D498347 | Boot upper | 11/16/2004 |
| D495120 | Basketball shoe | 08/31/2004 |
| D494342 | Boot upper | 08/17/2004 |