Inventor
John T. Rotunda
Inventor
Renton, WA, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A63Bprimary
A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing35%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters18%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems12%
A61BDiagnosis6%
G01DMeasuring not specially adapted for a specific variable6%
H02HEmergency protective circuit arrangements6%
PatentTitleYear
5,856,736'Variable speed AC motor drive for treadmill'19995,747,955'Current sensing module for a variable speed AC motor drive for use with a treadmill'19985,650,709'Variable speed AC motor drive for treadmill'19975,545,112'D.C. treadmill speed change motor controller system'19965,489,250'Treadmill deceleration system and method'19965,290,205'D.C. treadmill speed change motor controller system'19945,264,864'Chart recorder'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993–1999Patents assigned to QUINTON INSTR (7)· patent assignee history
1993–1996Based in Renton, WA, US· patent location history
1997–1999Based in Bothell, WA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| QUINTON INSTR | 7 | 1993–1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Renton, Washington, US | 4 | 1993–1996 |
| Bothell, Washington, US | 3 | 1997–1999 |