"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
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| Number | Title | Issue Date |
| 4190930 | Window and sash balance A rattle free window having a sash balance that is provided with a sash hook that is connected to a slide by slot and pin means so arranged that the weight of the sash thereon cam; the slide laterally against the window jamb. The sash balance may also inc... | 03/04/1980 |