Inventor
Mitsuo Katanuma
Inventor
Tokyo, JP
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Mprimary
H04MTelephonic communication100%
PatentTitleYear
4,520,235'Electronic key telephone system'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985Patents assigned to NEC CORP (1)· patent assignee history
1985Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NEC CORP | 1 | 1985 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 1 | 1985 |