Calculagraph Company
Doing business as Control Products, INC.
At a glance
Employees20-99
In business sinceNot reported
HeadquartersEast Hanover, NJ
US patents4
SAM.gov UEIRKLNJFLQ1N28
CAGE code81901
Incorporated inNJ
Brands
Baler Limit Switch
Emergency Stop Switch
Engine Fan ControlThis company sells these brands.
- News Careers
- CALL
- Waterproof Switches
- Thermal Switches
- Linear Position Sensors
- Plunger Switches
- Momentary Switches
- Rocker Switches
- Ball Switches
- Limit Switches
- Switch Panels
- Railway Wheel Measurement
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
4 US patents granted 1984–1997, none of them in the five years to SEP 2025.
Telecommunications 3Electrical machinery, apparatus, energy 1
- Method and apparatus for switching mechanismUS 5,671,841 · granted SEP 30, 1997
- Demultiplexer for two-stage framingUS 4,688,215 · granted AUG 18, 1987
- Frame synchronization for distributed framing pattern in electronic communication systemsUS 4,611,336 · granted SEP 9, 1986
- Customer premises loop test unit powered from the normal central office power sourceUS 4,446,340 · granted MAY 1, 1984
Granted to Calculagraph Co. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Calculagraph Company | East Hanover | NJ | 20–99 | 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.