Patrick G. Farren and five other defendants, arrested in connection with the February 16 demonstration in the JFK Building in Boston, were found guilty yesterday of violating building regulations.

Farren, New England coordinator of the Harrisburg Pilgrimage Committee, was sentenced to 20 days in jail. Denise Latimer, who is still in custody of U.S. marshalls for refusing to allow her fingerprints to be taken, received a ten-day jail sentence. The four other defendants received lesser penalties.

The Harrisburg Pilgrimage Committee was organized in support of the defendants in the Harrisburg conspiracy trial The defendants in the trial are charged with conspiracy to kidnap presidential advisor Henry A. Kissinger '50, blow up heating ducts in Federal buildings in Washington, D.C., and destroy Selective Service records.

One defendant, Michele Hogan, acted through an attorney because she is a minor. The others, however, conducted their own defense with the help of two court-appointed lawyers.

All six were officially charged with blocking the entrances to the Internal Revenue Service income tax processing office, a violation of the building regulations. In order to appeal, they must file written requests within ten days.

On the witness stand yesterday, Farren said the demonstration was held to protest the use of Federal tax money to fight the "illegal, unconstitutional. unjust Vietnam war." He said he wanted to "arouse public interest" in how these funds were being used.

Defendants Were Strangers

The demonstration followed a press conference in Fanueil Hall. Prior to the demonstration, plans were made to stage the sit-in the IRS office, Farren said. He maintained he knew only one of the defendants. Latimer, before the arrests