Assignee
WARREN ROBERT C
US·3 granted patents·89 citations·filing 1992–1994
Top patents by PatentIndex Score
3 records- 0177US5269227AMotorized portable system and method for aiding persons in ascending or descending stairwaysWARREN ROBERT C·Filed 1992·Granted Dec 14, 1993·50 cites·13 claims
- 0269US5363771AMotorized portable system for aiding persons in ascending or descending stairwaysWARREN ROBERT C·Filed 1993·Granted Nov 15, 1994·23 cites·10 claims
- 0330US5522322AMotorized system and method for aiding physically-impaired persons in moving between different positionsWARREN ROBERT C·Filed 1994·Granted Jun 4, 1996·16 cites·17 claims
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