Inventor
Walter J. Petersen
Inventor
Eden Prairie, MN, US
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A01Bprimary
A01BSoil working in agriculture or forestry24%
A01DHarvesting19%
B44DPainting or artistic drawing, not otherwise provided for10%
B60GVehicle suspension arrangements5%
E01FAdditional work, such as equipping roads or the construction of platforms, helicopter landing stages, signs, snow fences, or the like5%
E01HStreet cleaning5%
F16DCouplings for transmitting rotation5%
F24HFluid heaters, e.g. water or air heaters, having heat-generating means, e.g. heat pumps, in general5%
G01MTesting static or dynamic balance of machines or structures5%
G05GControl devices or systems insofar as characterised by mechanical features only5%
PatentTitleYear
7,669,667'Aerator with assembled multi-part crankshaft'20107,600,573'Tine holder for turf aerator'20097,472,759'Aerator with shortened coring head depth'20097,293,612'Walk aerator with ground following coring head'20077,096,969'Walk aerator with inboard wheels'20066,032,441'Triplex trim mower with laterally adjustable cutting units'20005,745,947'Automatic debris retrieval system'19985,744,701'Electronic liquid leak detector'19985,364,114'Vehicle steering and suspension system'1994RE034018'Heating coil assembly'19924,854,112'Turf maintenance apparatus'19894,683,370'Hot air gun with air directing housing'19874,636,617'Heating coil assembly for a heavy duty hot air blower'19874,325,211'Floating deck for rider mower'19824,246,803'Traction control mechanism for hydrostatic transmission'19814,223,771'Brake clutch'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–2010Patents assigned to TORO CO (12)· patent assignee history
1980–2010Based in Eden Prairie, MN, US· patent location history
1981Patents assigned to KLIS DAVID S (1)· patent assignee history
1981Patents assigned to PETERSEN WALTER J (1)· patent assignee history
1987Patents assigned to WAGNER SPRAY TECH CORP (2)· patent assignee history
1994Based in Hennepin, MN, US· patent location history
2009Based in Chaska, MN, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TORO CO | 12 | 1980–2010 |
| WAGNER SPRAY TECH CORP | 2 | 1987 |
| KLIS DAVID S | 1 | 1981 |
| PETERSEN WALTER Jself | 1 | 1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Eden Prairie, Minnesota, US | 14 | 1980–2010 |
| Chaska, Minnesota, US | 1 | 2009 |
| Hennepin, Minnesota, US | 1 | 1994 |