General Transervice, INC.
Doing business as Rampmaster
At a glance
Employees20-99
In business since1959
HeadquartersCoatesville, PA
US patents5
SAM.gov UEIE1SAWGJSXJN7
CAGE code3HKR4
Incorporated inPA
Brands
Modern Aviation
Menzies Aviation
American AirlinesThis company sells these brands.
- refueling solutions
- trucks
- carts
- aviation fuel
- WD Exchange
- RJ Exchange
- 17.5k
- Engine Management System
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
5 US patents granted 1989–2013, none of them in the five years to SEP 2025.
Transport 2Control 2Handling 1
- System and method for distributing fuel from a hydrant pit valve at an airportUS 8,511,351 · granted AUG 20, 2013
- Bulk fuel delivery system for operating a fluid driven power source at a constant speedUS 6,324,840 · granted DEC 4, 2001
- Dual hose assembly and control system for truck-to-truck fuel transferUS 6,082,392 · granted JUL 4, 2000
- Valve system having a deadman controlled actuating member in a vented chamberUS 5,957,148 · granted SEP 28, 1999
- Hydrant refuelerUS 4,886,282 · granted DEC 12, 1989
Granted to General Transervice, Inc. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| General Transervice, INC. | Coatesville | PA | 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.