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Inventor

Hiroshi Tamama

Inventor
Saitama, JP

Overview

1→
Patents
1984
Patent span
Performing operations
Primary field (CPC B)

Patents· 1 as inventor

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

B63Hprimary
B63HMarine propulsion or steering50%
F16JPistons50%
PatentTitleYear
4,436,313'Device for sealing a propeller shaft against invasion of sea water'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984Patents assigned to JAPAN NATIONAL RAILWAY (1)· patent assignee history
1984Based in Saitama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JAPAN NATIONAL RAILWAY11984
Locations
LocationPatentsSpan
Saitama, JP11984