Facility	City	Industry	Status	Distance
Northrop Grumman Poly Scientific	Springfield	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511	UNVERIFIED	2.5 KM
The Cemtech Delmar Partnership INC	Media	Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables 334513	ACTIVE	5.1 KM
Chronolog CORP	Havertown	Electromedical and Electrotherapeutic Apparatus Manufacturing 334510	ACTIVE	6.9 KM
Dragonfly Pictures, INC.	Essington	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511	ACTIVE	7.0 KM
Protokinetics LLC	Havertown	Electromedical and Electrotherapeutic Apparatus Manufacturing 334510	ACTIVE	7.7 KM

Every listed plant in Delaware County

Also at this address

No other federal record shares this street address.

WHERE THIS RECORD COMES FROM — 1 FEDERAL SOURCE, 5 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.

EPA cross-references this facility in OSHA-OIS.

Source	Evidence	First seen	Last seen
EPA FRS	EXISTENCE	SEP 2018	SEP 2018

FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT

FIELD	SOURCE	SIGNAL
ADDRESS LINE1	EPA FRS	JUL 2026
CITY	EPA FRS	JUL 2026
GEOM	EPA FRS	JUL 2026
NAME	EPA FRS	JUL 2026
STATE	EPA FRS	JUL 2026

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

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