P

Inventor

O'BRIEN DANIEL W

US6 patents
⚠️ This page may combine multiple inventors who share the name “O'BRIEN DANIEL W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MALLORY SONALERT PRODUCTS INC

3 patents
US6987445B1Jan 17, 2006

Water resistant audible signal

MALLORY SONALERT PRODUCTS INC19 citations79
US9619983B1Apr 11, 2017

Wireless tandem alarm

MALLORY SONALERT PRODUCTS INC0 citations49
US9165440B1Oct 20, 2015

Multi-sensory warning device

MALLORY SONALERT PRODUCTS INC1 citations49

BALDWIN CHRISTOPHER M

2 patents
US9030318B1May 12, 2015

Wireless tandem alarm

BALDWIN CHRISTOPHER M8 citations81
US8797176B1Aug 5, 2014

Multi-sensory warning device

BALDWIN CHRISTOPHER M8 citations81

YOSEMITE INVESTMENT INC

1 patent
US5872506AFeb 16, 1999

Piezoelectric transducer having directly mounted electrical components and noise making device utilizing same

YOSEMITE INVESTMENT INC14 citations70