Operating signal within 12 months from two or more independent sources.
What they make
Semiconductor Machinery Manufacturing333242Thermionics Laboratory manufactures custom ultra high vacuum systems and components including e-Guns, chambers, and accessories. The company serves industries including aerospace and defense, energy storage, linear accelerators, materials and cryogenic science, semiconductor capital equipment, and thin film deposition.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Applied Materials | Hayward | Semiconductor Machinery Manufacturing 333242 | UNVERIFIED | 0.5 KM |
| Naylor Steel INC | Hayward | Semiconductor Machinery Manufacturing 333242 | UNVERIFIED | 1.0 KM |
| Etec Systems INC | Hayward | Semiconductor Machinery Manufacturing 333242 | UNVERIFIED | 1.5 KM |
| Heat & Control INC | Hayward | Iron and Steel Forging 332111 | UNVERIFIED | 1.6 KM |
| Cec Print Solutions | Union City | Industrial Machinery Manufacturing 333244 | UNVERIFIED | 4.9 KM |
Also at this address
1 other record shares this street address. Separate filings can describe distinct businesses on one site, or the same plant recorded by different agencies, so every record is kept rather than merged away.
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 | JUL 2026 |
| SAM GOV | OPERATING | OCT 2025 | OCT 2025 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | SAM GOV | OCT 2025 |
| CAGE CODE | SAM GOV | OCT 2025 |
| CITY | SAM GOV | OCT 2025 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| NAME | SAM GOV | OCT 2025 |
| REGISTRATION EXPIRATION | SAM GOV | OCT 2025 |
| STATE | SAM GOV | OCT 2025 |
| WEBSITE | SAM GOV | OCT 2025 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.