Sound boards for harps
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 24, 2014
Grant Date -
Mar 28, 2013
app pub date -
Jun 15, 2011
filing date -
Jun 15, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Sound boards having an elongate, approximately trapezoid shape, provided on the front face with a central longitudinal profiled string-carrier member and on the reverse side with a central profiled reinforcing member or beam, and with two side profiled members or sound bars, symmetrically disposed with respect to the reinforcing beam are provided. In such sound boards the cross-section of the reinforcing beam has a central portion with an increased height or thickness and two adjacent, symmetrical side portions or wings having a height or thickness which tapers gradually towards the outside through a concave arcuate profile up to a predetermined minimum value.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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