Inventor
Heinz Unterweger
Inventor
Buchs, CH
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Hprimary
H02HEmergency protective circuit arrangements50%
G05FSystems for regulating electric or magnetic variables25%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters25%
PatentTitleYear
4,065,805'Circuit arrangement in an electrical device operated with direct-current, especially in a timing relay'19774,015,178'Reference value transmitter for a phase clipping control for starting a squirrel cage-asynchronous motor'19774,000,410'Circuit arrangement for superposing starting conditions at an electrical operating means-simulator composed of RC-elements'19763,988,641'Phase breakdown- and null current-detector, especially for an electronic motor protection relay possessing current-dependent triggering'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1977Patents assigned to SPRECHER & SCHUH AG (4)· patent assignee history
1976–1977Based in Buchs, CH· patent location history
1977Based in Aarau, CH· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SPRECHER & SCHUH AG | 4 | 1976–1977 |
Locations
| Location | Patents | Span |
|---|---|---|
| Buchs, CH | 3 | 1976–1977 |
| Aarau, CH | 1 | 1977 |