Trademark applications and grants for Ringstad Ralph H. Ringstad Ralph H has 1 trademark applications. The latest application filed is for "ATLAN"
Patent Application | Date |
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System for transferring a load between two power sources without interruption of power to the load 4,405,867 - 06/114,521 Moakler , et al. September 20, 1 | 1983-09-20 |
IN-PHASE MONITOR FOR DETERMINING IN-PHASE CONDITION OF TWO SEPARATE ALTERNATING CURRENT SOURCES 3,652,866 - 05/071,694 Moakler , et al. March 28, 1 | 1972-03-28 |
AUTOMATIC SYNCHRONIZING MONITOR FOR PARALLEL CONNECTION OF TWO SEPARATE ALTERNATING-CURRENT SOURCES 3,601,619 - 04/881,796 RINGSTAD August 24, 1 | 1971-08-24 |
Mark Image Registration | Serial | Trademark Application Date |
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![]() "ATLAN" 1766273 74137658 |
ATLAN 1991-02-08 |
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