"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4852987 | Device for measuring eye lens opacity The invention is directed to an apparatus for making in vivo measurements of eye lens cloudiness such as caused by cataracta nuclearis. The lens of the human eye has an inherent fluorescence which corresponds to the cloudiness. The apparatus of the invent... | 08/01/1989 |