Koehler Manufacturing Company

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4508801 Lead acid battery with self-registering grid complement and methods of making and operating sameExpiredSep 03, 81Apr 02, 85[H01M]
4438483 Utility handlamp and charging component means thereforExpiredMar 31, 82Mar 20, 84[F21L]
4428039 Safety lamp apparatus including means for preventing accidental breakage of a bulb memberExpiredMar 23, 82Jan 24, 84[F21V]
4411969 Battery construction characterized by reactively limited gridless electrode means, and methods of making and operating sameExpiredMay 06, 81Oct 25, 83[H01M]
4386391 Luminaire apparatus with multiple light sources including method and means for switching and adjusting focus of the light sourcesExpiredJul 28, 80May 31, 83[F21V]
4373178 Methods and apparatus for controlling reflected lightExpiredNov 03, 80Feb 08, 83[F21V]
4359509 Tubular positive electrode means for use in lead-acid storage batteries including shaped grid structure and self-registering grid complement means thereforExpiredFeb 27, 81Nov 16, 82[H01M]
4351889 Tubular bodies for use in a positive plate of a lead-acid storage batteryExpiredJun 11, 81Sep 28, 82[H01M]
4352148 Equipment corner notch-mounted triangular enclosure for tubular light sourceExpiredAug 19, 80Sep 28, 82[B60Q]
4338655 Luminaire apparatus including expansible reflector means and method of reflecting radiant energy to provide a spot to flood configurationExpiredOct 20, 80Jul 06, 82[F21V]
4317162 Battery operated luminaire with emergency switching meansExpiredMay 02, 80Feb 23, 82[F21V]
4316241 Method and apparatus for controlling reflected energy including dual light transmitting means for producing a spot to flood configurationExpiredDec 13, 79Feb 16, 82[F21V, F21L]
4303746 Storage battery construction including bonded plate assembly and methods of making sameExpiredApr 14, 80Dec 01, 81[H01M]
4285121 Method of making storage batteries of the lead-acid classExpiredJul 26, 79Aug 25, 81[H01M]
4282564 Triangular enclosure for tubular light sourceExpiredJul 24, 78Aug 04, 81[F21S]
4276359 Lead-acid battery with tubular plate electrodeExpiredMay 25, 79Jun 30, 81[H01M]
4257086 Method and apparatus for controlling radiant energyExpiredOct 22, 79Mar 17, 81[F21Y, G03B]
4252871 Tubular support sleeve for lead-acid storage batteryExpiredJun 18, 79Feb 24, 81[H01M]
4247884 Fluorescent mine lighting fixtureExpiredOct 27, 76Jan 27, 81[F21L, F21S]
4225906 Luminaire apparatus with multiple light sources and methods of operating sameExpiredMar 16, 78Sep 30, 80[F21V]

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