Inventor

BAGSHAW DAVID P

US4 patents

⚠️ This page may combine multiple inventors who share the name “BAGSHAW DAVID P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DUVAL EUGENE F

2 patents

US4450868AMay 29, 1984

Freeze protection apparatus for solar collectors

DUVAL EUGENE F38 citations90

US4280478AJul 28, 1981

Freeze protection apparatus for solar collectors

DUVAL EUGENE F22 citations79

SUNSPOOL CORP

2 patents

US4541412ASep 17, 1985

Check valve and spring to prevent forward and reverse thermosiphoning in solar collector systems

SUNSPOOL CORP9 citations70

US4395882AAug 2, 1983

Freeze protection apparatus for solar collectors

SUNSPOOL CORP16 citations70