Elmer R. Carvalho

DP D. G. Shelter Products: 2 patents #3 of 6Top 50%

🗺 California: #149,087 of 386,348 inventorsTop 40%

Overall (All Time): #1,649,483 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5379824	Double window apparatus	—	1995-01-10
4345587	Solar energy collector means and method of assembling the same	—	1982-08-24
4186525	Removable closure panel and releasable spring hinge means therefor	—	1980-02-05