Dicke Tool CO
At a glance
Employees20-99
In business sinceNot reported
HeadquartersDowners Grove, IL
US patents31
SAM.gov UEIJLMLEG6RD4N6
CAGE code61JY5
Incorporated inIL
LEI254900LX37YZNCIQ0B76
- work areas
- emergency traffic control zones
- tools
- arborist industries
- roll-up signs
- sign stands
- safety apparel
- flags
- sequential warning lights
- paddles
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit OrganizationManufacturer of GoodsWoman Owned Business
Self-certified by the company in its SAM.gov registration
Patents
31 US patents granted 1987–2012, none of them in the five years to SEP 2025, including 3 design patents.
Civil engineering 13Audio-visual technology 13Transport 2
- Rib support of folded materialUS 8,122,630 · granted FEB 28, 2012
- Collapsible sign for use in or near a roadwayUS 7,849,618 · granted DEC 14, 2010
- Quick release mechanism for use with a sign standUS 7,686,264 · granted MAR 30, 2010
- Hand operated traffic signal deviceUS 7,681,349 · granted MAR 23, 2010
- Sign panel attachmentUS 7,637,046 · granted DEC 29, 2009
Newest 5 shown · Granted to Dicke Tool Company · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Dicke Tool CO | Downers Grove | IL | 20–99 | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.