"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| D637551 | Valve cap | 05/10/2011 |
| D627294 | Tire valve stem cap | 11/16/2010 |
| D624875 | Tire valve stem and cap with hat | 10/05/2010 |
| D617729 | Valve stem cap | 06/15/2010 |
| D568237 | Valve caps for vehicle tires | 05/06/2008 |
| D491519 | Tire air valve mini helmet cover | 06/15/2004 |