Inventor
John H. Kniefel
Inventor
Owatonna, MN, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E04Hprimary
E04HBuildings or like structures for particular purposes43%
A47CChairs29%
A63JDevices for theatres, circuses, or the like29%
PatentTitleYear
D0365465'Workstation that supports keyboards and computer components on an electric piano'1995D0362566'Multi-media workstation'19955,381,873'Portable riser unit with a telescopic brace'1995D0354182'Computer workstation'19955,357,876'Portable hinged riser'19945,343,817'Portable podium and performance platform system'1994D0341431'Step for a portable riser assembly'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993–1995Patents assigned to WENGER CORP (7)· patent assignee history
1993–1995Based in Owatonna, MN, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WENGER CORP | 7 | 1993–1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Owatonna, Minnesota, US | 7 | 1993–1995 |