Inventor

O'CALLAGHAN JOHN T

US4 patents

⚠️ This page may combine multiple inventors who share the name “O'CALLAGHAN JOHN T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BOYLE CHRISTOPHER T

3 patents

USD704762SMay 13, 2014

H4 ENG INC

1 patent

US9253376B2Feb 2, 2016

Portable video recording system with automatic camera orienting and velocity regulation of the orienting for recording high quality video of a freely moving subject

H4 ENG INC16 citations92

O'CALLAGHAN JOHN T

BOYLE CHRISTOPHER T

Mounting and positioning unit for electronic recording device

Electronic communication device

Camera mounting and positioning device

H4 ENG INC

Portable video recording system with automatic camera orienting and velocity regulation of the orienting for recording high quality video of a freely moving subject