Service Machine Company
Patent Owner
Stats
- 1 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Jul 09, 1996 most recent publication
Details
- 1 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 240 Total Citation Count
- Mar 08, 1982 Earliest Filing
- 12 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
5381321 Luminaire for hazardous atmospheres and explosion proof enclosure for power supply thereforJun 02, 92Jan 10, 95[F21S]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5534664 Explosion proof power supply enclosure for hazardous atmosphere lighting systemsExpiredJul 25, 94Jul 09, 96[H02G]
5065142 Voltage pickup circuit and flashing display for high voltage indicator device, and input electrode thereforExpiredMay 23, 90Nov 12, 91[G08B]
4894497 High temperature pressure switch assembly for use with explosion-proof enclosuresExpiredFeb 08, 89Jan 16, 90[H01H]
4665466 Low headroom ventilating apparatus for cooling an electrical enclosureExpiredNov 26, 85May 12, 87[H05K]
4484690 Flame arresting ventilated wall for an explosion-proof enclosureExpiredMar 08, 82Nov 27, 84[B65D]
Top Inventors for This Owner
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