Inventor
Chadwick A. Shaffer
Inventor
Oakdale, MN, US
Overview
Patents· 32 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A01Gprimary
A01GHorticulture20%
LOC1520%
A01DHarvesting16%
A47LDomestic washing or cleaning14%
E01HStreet cleaning14%
B62BHand-propelled vehicles, e.g. hand carts or perambulators4%
B62DMotor vehicles4%
LOC084%
B25FCombination or multi-purpose tools not otherwise provided for2%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables2%
PatentTitleYear
10,834,871Walk power mower with transmission providing both forward and reverse propulsion202010,306,831Walk power mower having forward and reverse traction drive201910,123,478Walk power mower with biased handle201810,111,381Walk power mower with transmission providing both forward and reverse propulsion20189,472,992'Electric motor support structure and power equipment unit incorporating same'20169,420,924'Oscillating airstream nozzle for debris blower'2016D0747050'Housing of a portable blower/vacuum'20169,131,643'Cord wrap system and portable blower incorporating same'2015D0735428'Nozzle for a debris blower'20158,602,334'Debris vacuum with supplemental debris shearing surface'2013D0676876'Handle for a ground-working implement'2013D0675232'Snowthrower power head'2013D0642596'Snowthrower power head'2011D0642595'Snowthrower handle'20117,735,188'Air inlet cover and portable blower/vacuum incorporating same'2010D0566491'Vegetation trimmer'20087,314,096'Adjustable handle for portable tool'2008D0556395'Housing for a convertible blower/vacuum'20077,266,893'Filament trimmer with dual triggers'20077,257,909'Convertible yard tool'2007D0524824'Convertible yard tool'2006D0519127'Housing for convertible yard tool'20066,973,728'Filament trimmer with dual triggers'20056,742,263'Filament trimmer with adjustable cutoff blade'2004D0483236'Filament trimmer'20036,442,790'Portable blower/vacuum having air inlet cover attachable to blower tube'2002D0461604'Housing for a blower/vacuum'20026,324,720'Portable blower tube noise reduction'20016,158,082'Portable blower with blower tube noise reduction'20006,059,541'Air inlet cover for portable blower/vacuum'20006,003,199'Air concentrator nozzle for portable blower'19995,979,013'Portable blower with noise reduction'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2016Patents assigned to TORO CO (25)· patent assignee history
1999–2020Based in Oakdale, MN, US· patent location history
2013–2015Patents assigned to SHAFFER CHADWICK A (4)· patent assignee history
2013Patents assigned to MARTIN DAVID J (2)· patent assignee history
2015Patents assigned to HOFFMAN MICHAEL J (1)· patent assignee history
2016–2020Patents assigned to THE TORO CO (6)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TORO CO | 25 | 1999–2016 |
| THE TORO CO | 6 | 2016–2020 |
| SHAFFER CHADWICK Aself | 4 | 2013–2015 |
| MARTIN DAVID J | 2 | 2013 |
| HOFFMAN MICHAEL J | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Oakdale, Minnesota, US | 32 | 1999–2020 |