-- patented designs --
( the use of asymmetry in bridge design is protected by U.S. patent #6,803,510 )
The patterns shown below are some of my early designs.
I've temporarily slowed down the development of these patterns
while I research ways in which to produce them more efficiently.
basic model - installed
more names & initials
See one being made
a bridge of inverted hearts - sycamore
heart bridge - maple