Street Light Technical Information
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STREET LIGHTS: Patents from 1975 Through 1979 |
Patents are an effective way to understand the development of street lighting in the United States. In this section I have posted patents as I located them. (Early patents are difficult to locate as they were not cross-indexed.)
All patents are listed in order of their filing dates. Click on the patent number or thumbnail to view the entire patent. |
In the second half of the 1970s there was continued development of full cutoff designs, although more efficient post mount luminaires were still being designed. |
Patent No. 4007365
Filing date: April 5, 1975 |
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Patent No. 4028542
Filing date: April 16, 1975 |
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Patent No. 4010362
Filing date: December 4, 1975 |
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Patent No. 4041306
Filing date: December 15, 1975 |
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Patent No. 4053766
Filing date: December 23, 1975 |
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Patent No. 4096555
Filing date: October 28, 1976 |
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Patent No. 4261028
(France patent date: October 7, 1977) |
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Patent No. 4160286
Filing date: July 18, 1977 |
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Patent No. 4112483
Filing date: December 5, 1977 |
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Patent No. 4261029
Filing date: February 5, 1979 |
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Patent No. 4242727
Filing date: March 29, 1979 |
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Please note: This index is a work in progress. If you notice an error or are aware of something that is missing, please feel free to
Email me.
Thanks! |