M & R Industries, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4839504 IC card system compatible with bank account systemExpiredJul 17, 87Jun 13, 89[G06F]
4776582 Exercise treadmill with adjustable slopeExpiredOct 09, 86Oct 11, 88[A63B]
4756523 Exercise rowing machine with seat carriage lockExpiredJul 03, 86Jul 12, 88[A63B]
4750735 Adjustable hydraulic load-resisting mechanisms for exercise machinesExpiredOct 09, 86Jun 14, 88[A63B, F16F]
4736944 Exercise rowing machine frame structureExpiredOct 09, 86Apr 12, 88[A63B]
4541627 Exercise rowing machineExpiredJul 29, 83Sep 17, 85[A63B]

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