4/7/2024 0 Comments Reader railroad 1702 cab![]() Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Family has litigation Priority to US07/037,721 priority Critical patent/US4914431A/en Priority to US07/480,078 priority patent/US5184048A/en Priority to US08/012,364 priority patent/US5394068A/en Application filed by Severson Frederick E., Quinn Patrick A. ![]() Priority date (The priority date is an assumption and is not a legal conclusion. Quinn Original Assignee Severson Frederick E. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Ceased Application number US08/127,630 Inventor Frederick E. Google Patents Signaling techniques for DC track powered model railroadsÄownload PDF Info Publication number US5448142A US5448142A US08/127,630 US12763093A US5448142A US 5448142 A US5448142 A US 5448142A US 12763093 A US12763093 A US 12763093A US 5448142 A US5448142 A US 5448142A Authority US United States Prior art keywords track motor state polarity remote control Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US5448142A - Signaling techniques for DC track powered model railroads ![]() US5448142A - Signaling techniques for DC track powered model railroads ![]()
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