Inventor
BORGARDT RONALD
US6 patents
⚠️ This page may combine multiple inventors who share the name “BORGARDT RONALD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
(unassigned)
5 patentsUS5881497AMar 16, 1999
Automatic door opener adaptable for manual doors
64 citations92
US5486026AJan 23, 1996
Double-acting positive latch system for sliding doors
52 citations89
US5392834AFeb 28, 1995
Breakaway bi-folding door assembly
35 citations89
US6089360AJul 18, 2000
Locking assembly for automatic doors
3 citations59
US6526697B1Mar 4, 2003
Swing door pivot protector
1 citations48