FactoryRegistry
Claim a page

Invention House LLC

538 Leffingwell Ave, Ste a, Saint Louis, MO 63122

ACTIVELAST SEEN IN FEDERAL DATA AUG 2026 · 2 SOURCES

Operating signal within 12 months from two or more independent sources.

Visit websiteDirectionsGo to companyClaim this pageGet the badge
Homepage of Invention House LLC
Their homepage, crawled JUL 2026

What they make

Relay and Industrial Control Manufacturing335314

Invention House manufactures conformal coating robotics for printed circuit boards and variable frequency drives, including single-phase and 3-phase motor drives and 400 Hz motor drives for aviation applications. The company serves various industries with equipment designed for challenging and extreme environments, and provides motor control consulting services. The company's products are American-made and engineered to meet mil-spec requirements.

SUMMARIZED FROM THE COMPANY’S OWN WEBSITE

Where it is

38.57391, -90.39877 · CENSUS TIGER
COUNTY
METRO AREA
ON GOOGLE MAPS
STREET VIEW

Other plants nearby

FacilityCityIndustryStatusDistance
Affton Auto Radiator and Air Conditioning Service, INC.FentonPower Boiler and Heat Exchanger Manufacturing
332410
ACTIVE4.7 KM
Magnetic Power Systems Inc-manufacturers DriveFentonRelay and Industrial Control Manufacturing
335314
UNVERIFIED5.9 KM
Abb Motors and Mechanical INCSaint LouisMetal Crown, Closure, and Other Metal Stamping (except Automotive)
332119
LIKELY ACTIVE5.3 KM
Engineered Lifting Systems LLCFentonOverhead Traveling Crane, Hoist, and Monorail System Manufacturing
333923
ACTIVE8.1 KM
R. G. Weber Control Systems, IncorporatedSaint LouisInstruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
334513
LIKELY ACTIVE8.3 KM

Every listed plant in St. Louis County

Also at this address

No other federal record shares this street address.

WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 8 FIELDS

Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.

SourceEvidenceFirst seenLast seen
COMPANY SITEOPERATINGJUL 2026AUG 2026
SAM GOVOPERATINGSEP 2025SEP 2025
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
FIELDSOURCESIGNAL
ADDRESS LINE1SAM GOVSEP 2025
CAGE CODESAM GOVSEP 2025
CITYSAM GOVSEP 2025
GEOMCENSUS GEOCODERJUL 2026
NAMESAM GOVSEP 2025
REGISTRATION EXPIRATIONSAM GOVSEP 2025
STATESAM GOVSEP 2025
WEBSITESAM GOVSEP 2025

Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Report a correction · Request removal