The Knapheide Mfg. CO
Doing business as The Knapheide Manufacturing CO
At a glance
Employees500+
In business sinceNot reported
Industry
HeadquartersQuincy, IL
US patents11
SAM.gov UEIL8TKAX39JYU8
CAGE code5EQG3
Incorporated inIL
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
11 US patents granted 1977–2025, 1 of them in the five years to SEP 2025, including 5 design patents.
Civil engineering 3Transport 2Machine tools 1
- Vehicle tail lightUS D1071263 · granted APR 15, 2025
- Extruded component floor structureUS 10,717,472 · granted JUL 21, 2020
- Stylized cabinet latchUS D773921 · granted DEC 13, 2016
- Side-discharge chipper bodyUS 8,562,278 · granted OCT 22, 2013
- LatchUS D638276 · granted MAY 24, 2011
Newest 5 shown · Granted to Knapheide Manufacturing Company · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| The Knapheide Manufacturing CO | Quincy | IL | 500+ | 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.