Inventor

Haoliang Dong

Inventor

Cupertino, CA, US

Overview

2018

Patent span

Electricity

Primary field (CPC H)

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Rprimary

H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers50%

H04SStereophonic systems50%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

2018Patents assigned to AMAZON TECH INC (1)· patent assignee history

2018Based in Cupertino, CA, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AMAZON TECH INC	1	2018

Locations

Location	Patents	Span
Cupertino, California, US	1	2018