Ultra-sound welded window frames
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 21, 1992
Grant Date -
N/A
app pub date -
Aug 18, 1989
filing date -
Aug 18, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A window frame is made of a plastic material which is secured together by utilization of corner key pieces at each of the four corners joining the header and the sill with a pair of jambs. The corner key pieces may be initially stapled or screwed to the frame members to create a stable unit prior to the permanent securement of the various members by means of ultra-sound welding.
First Claim
Family
International Classification(s)
Cited Art Landscape
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