Inventor

SYTSMA FREDERICK R

4 patents

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

FROST & SON C L

2 patents

US3971601AJul 27, 1976

Sanitary anti-friction trolley wheel

FROST & SON C L45 citations89

US4266657AMay 12, 1981

Chain bracket with strengthened chain supports

FROST & SON C L8 citations71

FROST INC

1 patent

US4863293ASep 5, 1989

Sealed bearing assembly

FROST INC35 citations88

C L FROST AND SON INC

1 patent

US4210238AJul 1, 1980

Chain bracket with strengthened chain supports

C L FROST AND SON INC15 citations71