Inventor

SLOAN JOHN W

2 patents

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

HILL JAMES L

1 patent

US5287411AFeb 15, 1994

System for detecting the siren of an approaching emergency vehicle

HILL JAMES L42 citations88

JOHNSTON SHERWOOD

1 patent

US4222111ASep 9, 1980

Method and apparatus for monitoring status of tables in a restaurant

JOHNSTON SHERWOOD47 citations85