Invention House LLC
538 Leffingwell Ave, Ste a, Saint Louis, MO 63122
Operating signal within 12 months from two or more independent sources.
What they make
Relay and Industrial Control Manufacturing335314Invention 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
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Affton Auto Radiator and Air Conditioning Service, INC. | Fenton | Power Boiler and Heat Exchanger Manufacturing 332410 | ACTIVE | 4.7 KM |
| Magnetic Power Systems Inc-manufacturers Drive | Fenton | Relay and Industrial Control Manufacturing 335314 | UNVERIFIED | 5.9 KM |
| Abb Motors and Mechanical INC | Saint Louis | Metal Crown, Closure, and Other Metal Stamping (except Automotive) 332119 | LIKELY ACTIVE | 5.3 KM |
| Engineered Lifting Systems LLC | Fenton | Overhead Traveling Crane, Hoist, and Monorail System Manufacturing 333923 | ACTIVE | 8.1 KM |
| R. G. Weber Control Systems, Incorporated | Saint Louis | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables 334513 | LIKELY ACTIVE | 8.3 KM |
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.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | AUG 2026 |
| SAM GOV | OPERATING | SEP 2025 | SEP 2025 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | SAM GOV | SEP 2025 |
| CAGE CODE | SAM GOV | SEP 2025 |
| CITY | SAM GOV | SEP 2025 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| NAME | SAM GOV | SEP 2025 |
| REGISTRATION EXPIRATION | SAM GOV | SEP 2025 |
| STATE | SAM GOV | SEP 2025 |
| WEBSITE | SAM GOV | SEP 2025 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.


