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United States Utility Patents
4,449,790 - 4,449,799
Previous 10 Next 10
| Number | | Title |
|
4,449,790 |
|
Electrochromic layer system |
|
4,449,791 |
|
Three-group zoom lens |
|
4,449,792 |
|
Large-aperture single lens with aspherical surfaces |
|
4,449,793 |
|
Inverted telephoto type wide angle lens system |
|
4,449,794 |
|
Imaging optical system |
|
4,449,795 |
|
Stereoscope with tongue and grooves |
|
4,449,796 |
|
Streamlined adjustable exterior rearview mirror |
|
4,449,797 |
|
Binocular ophthalmoscope |
|
4,449,798 |
|
Eye fundus observation apparatus |
|
4,449,799 |
|
Optical projection viewing system |
For U.S. patent law, rules, and procedures see MPEP.
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