Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7488002 | Security and/or value document Security and/or value document, with security features and with a verification element for verifying the security feature is disclosed. Integrated into the security and/or value document at different positions is at least one verification element and at least one se... | 02/10/2009 |
