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Inventor

Walter Hefel

Inventor
Thurgau, CH

Overview

2→
Patents
1976–1977
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 2 as inventor

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

B25Bprimary
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding33%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges33%
F16LPipes33%
PatentTitleYear
4,003,590'Fluid-tight flange coupling and method of making the same'19773,957,261'Holding device for workpieces and the like'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1977Patents assigned to HEFEL WALTER (2)· patent assignee history
1976–1977Based in Thurgau, CH· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HEFEL WALTERself21976–1977
Locations
LocationPatentsSpan
Thurgau, CH21976–1977