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Partial Client List

Here are just a few of them:
  • W.R. Grace (multiple locations)
  • Hirsch Financial Services - Baltimore
  • Johns Hopkins University
  • Maryland State Police
  • Lauderdale Marine Center - Ft. Lauderdale, FL
  • NASA
  • Van Nuys Airport - Los Angeles, CA
  • Lockheed Martin (multiple locations)
  • Genco Electronics - Fort Worth, TX
  • One Boulder Plaza Management Co. - Colorado
  • North Cities Pentecostal Church - Dallas, TX
  • Middle River Baptist Church - Baltimore
  • LifeCare Management of Maryland
  • Constantine Commercial Construction
  • Campbell & Company
  • Community Colleges of Baltimore County
  • Rosenberg, Martin, Greenberg, LLP


  • Click here to go to the State Police Web Site

    The Maryland State Police has served the citizens of Maryland since its inception in 1921. Entry-Master provides security in the new $10 million Operations Center in Hagerstown.   more...



    Click here to go to the Grace Home Page

    W.R. Grace is a premier specialty chemicals and materials company, applying innovative technologies to provide value-added products and services to global markets. Grace products enhance the performance of numerous consumer and industrial goods in several industries.   more...



    Click here to go to the HFS Home Page

    Hirsch Financial Services, Inc. (HFS) currently serves over 1,000 customers across the United States with Flexible Spending Account and COBRA administration. Located in Hunt Valley, Maryland, HFS maintains state of the art systems and processes. HFS believes that their strength is in delivering personal service to its customers and customers’ employees.   more...



    Click here to go to the JHU Home Page

    Based in Baltimore, The Johns Hopkins University is a privately endowed, co-educational institution for both undergraduate and graduate study and research.

    The Johns Hopkins University Homewood Campus is home to about 4,000 full-time undergraduates and nearly 1,400 full-time graduate students.   more...


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       Baltimore, MD 21211

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    Entry-Master Systems is located in Baltimore MD and services clients, large and small in the local area including Annapolis, Frederick, Columbia, Towson, Essex, Parkville, Timonium, Woodlawn, Owings Mill as well as Washington DC, Alexandria VA and the surrounding areas. In addition to the immediate service area, Entry-Master secures government and business facilities in Harrisburg PA, Boulder CO, Dallas TX, Richmond VA, Wilmington DE, Philadelphia PA, Atlanta GA, Orlando, Tampa and Miami FL and other locations around the USA.