BC Research & Development, Inc.
3Patents
0Active
3Granted
28Portfolio score
Filing activity: Nov 20, 1989 → Sep 17, 1990
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5036620A | Safety enhanced pivoting door operator | Fixed Constructions | 30 | Expired |
| US4976065A | Control apparatus for doors | Fixed Constructions | 10 | Expired |
| US5021644A | Presence detecting apparatus and method for automatic doors | Physics | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.