Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 5312320 | Apparatus for performing ophthalmological surgery The invention contemplates controlled ablation of the cornea, using ultraviolet laser radiation, wherein irradiated flux density and exposure time are so controlled as to achieve desired depth of the ablation. Sculpturing action results from precharacteri... | 05/17/1994 |
| 5188631 | Method for opthalmological surgery The invention contemplates controlled ablation of the cornea, using ultraviolet laser radiation, wherein irradiated flux density and exposure time are so controlled as to achieve desired depth of the ablation. Sculpturing action results from precharacteri... | 02/23/1993 |
| 5163934 | Photorefractive keratectomy Photorefractive keratectomy is accomplished by an excimer laser beam that ablates away corneal tissue in a photo decomposition process. Before this occurs, the epithelium (21) of the cornea (20) is surgically removed to expose Bowman's layer (22) on the a... | 11/17/1992 |
| 5009660 | Gas purging, eye fixation hand piece A gas purging, eye fixation hand piece (10) includes a vacuum ring (15) evacuated by a suction line (21) through a handle (20) via which a purging gas is delivered to an array of purging nozzles (36-38) aimed into the vacuum ring from around an inner peri... | 04/23/1991 |
