Inventor

Toshitsugu Hara

Inventor

Tokyo, JP

Overview

1976–1978

Patent span

Mechanical engineering

Primary field (CPC F)

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

F28Dprimary

F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact40%

F25BRefrigeration machines, plants or systems20%

F25DRefrigerators20%

F28FDetails of heat-exchange and heat-transfer apparatus, of general application20%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976–1978Patents assigned to HITACHI LTD (3)· patent assignee history

1976–1978Based in Tokyo, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	3	1976–1978

Locations

Location	Patents	Span
Tokyo, JP	3	1976–1978