Glasses with two position lenses
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 27, 2010
Grant Date -
Mar 4, 2010
app pub date -
Aug 10, 2009
filing date -
Aug 26, 2008
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Glasses such as bifocals, which have refractive lenses which are rotatable at least between two positions. A manual control rotates the lenses such that if bifocal, the relatively small, high magnification zone of each lens can be moved to a high position opposed to the usual low position of fixed bifocals. The user is spared the necessity of holding the head at an awkward posture when viewing overhead objects.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully