Inventor

John T. Gerritsen

Inventor
Hanover Park, IL, US

Overview

9→
Patents
1981–2006
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 9 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E06Bprimary
E06BFixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates27%
B23DPlaning7%
B24BMachines, devices, or processes for grinding or polishing7%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding7%
B25FCombination or multi-purpose tools not otherwise provided for7%
E04FFinishing work on buildings, e.g. stairs, floors7%
E05DHinges or suspension devices for doors, windows or wings7%
E05YIndexing scheme associated with subclasses e05d and e05f, relating to construction elements, electric control, power supply, power signal or transmission, user interfaces, mounting or coupling, details, accessories, auxiliary operations not otherwise provided for, application thereof7%
F25DRefrigerators7%
H01HElectric switches7%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1991Patents assigned to JARROW PRODUCTS INC (5)· patent assignee history
1981–1987Based in Hanover Park, IL, US· patent location history
1991Based in Wauconda, IL, US· patent location history
1995Patents assigned to SB POWER TOOL CO (1)· patent assignee history
1995Based in Elgin, IL, US· patent location history
2003–2006Patents assigned to WMH TOOL GROUP INC (3)· patent assignee history
2003–2006Based in Carpentersville, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JARROW PRODUCTS INC51981–1991
WMH TOOL GROUP INC32003–2006
SB POWER TOOL CO11995
Locations
LocationPatentsSpan
Hanover Park, Illinois, US41981–1987
Carpentersville, Illinois, US32003–2006
Elgin, Illinois, US11995
Wauconda, Illinois, US11991