Hartwell Corporation

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www.hartwellcorp.com

Their homepage, crawled JUL 31, 2026

At a glance

EmployeesNot reported

In business sinceNot reported

Industry

Hardware Manufacturing

HeadquartersPlacentia, CA

US patents121

SAM.gov UEIRK3SLMYMLK88

CAGE code83014

Incorporated inCA

Brands

Aircraft Flush Handles

Aircraft Gooseneck Hinges

Aircraft Hold Down

This company sells these brands.

Aircraft Latches
Aircraft Flush Handles
Emergency Escape Latches
Pressure Relief Door Latches
Adjustable Keepers
Aircraft Door Systems
Repair Station
Commercial Aviation
Military Aviation

Named on the company’s own website, read JUL 29, 2026

CareersCareers page — seen SEP 8, 2026

Supplier designations

For Profit OrganizationManufacturer of Goods

Self-certified by the company in its SAM.gov registration

Patents

121 US patents granted 1976–2025, 12 of them in the five years to SEP 2025, including 4 design patents.

Civil engineering 75Transport 19Mechanical elements 12Other special machines 3Machine tools 2

Aircraft latch lock key
US D1088806 · granted AUG 19, 2025
Clevis-sensing adjustable hook latch
US 12,054,965 · granted AUG 6, 2024
Latching system with movable anti-shear mechanism
US 11,866,189 · granted JAN 9, 2024
Key, lock, and latch assembly
US 11,773,622 · granted OCT 3, 2023
Aircraft latch lock key head
US D973463 · granted DEC 27, 2022

Newest 5 shown · Granted to Hartwell Corporation · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0

Their plant

Facility	City	State	Employees	Status
Hartwell Corporation	Placentia	CA	—	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.