Thomas Edison obtained a patent for an electrographic vote recorder.
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| Number | Title | Issue Date |
| D645619 | Helmet with lights | 09/20/2011 |
| D549395 | Helmet | 08/21/2007 |
| 7114198 | Helmet attachment A helmet attachment includes a structure representing at least one of an animal feature, an insect feature, a historical helmet feature, mythical creature part, and a vehicle feature. The helmet attachment further includes an attachment mechanism for securing the st... | 10/03/2006 |
| D524993 | Removable helmet cover | 07/11/2006 |
| D518920 | Rigid protective helmet | 04/11/2006 |
| 6973930 | Phototherapy eyeshield for babies An eyeshield (10) for protecting babies' eyesight during phototherapy treatment for neonatal jaundice includes a strap (11) of soft material sized and shaped to pass around and secured to the head of the baby. An eye pad (18) is attached or form... | 12/13/2005 |
| D504543 | Safety helmet | 04/26/2005 |
| D498880 | Helmet | 11/23/2004 |
| D490939 | Safety helmet | 06/01/2004 |