Cheng; David Cheng
Patent Applications and Registrations
Patent applications and USPTO patent grants for Cheng; David Cheng.The latest application filed is for "reconfigurable tilt wheelchair".
- Cheng; David Cheng - Delta N/A CA
| Patent | Date |
|---|---|
| Reconfigurable tilt wheelchair Grant 8,511,699 - Balcom , et al. August 20, 2 | 2013-08-20 |
| Telescoping crossbar assembly Grant 8,424,896 - Balcom , et al. April 23, 2 | 2013-04-23 |
| Reconfigurable tilt wheelchair Grant 8,336,898 - Balcom , et al. December 25, 2 | 2012-12-25 |
| Reconfigurable Tilt Wheelchair App 20120119466 - Balcom; Nancy ; et al. | 2012-05-17 |
| Reconfigurable Tilt Wheelchair App 20120104726 - Balcom; Nancy ; et al. | 2012-05-03 |
| Reconfigurable Tilt Wheelchair App 20120104724 - Balcom; Nancy ; et al. | 2012-05-03 |
| Reconfigurable tilt wheelchair Grant 8,132,823 - Balcom , et al. March 13, 2 | 2012-03-13 |
| Reconfigurable Tilt Wheelchair App 20110068553 - BALCOM; NANCY ; et al. | 2011-03-24 |
| Reconfigurable tilt wheelchair Grant 7,871,094 - Balcom , et al. January 18, 2 | 2011-01-18 |
| Reconfigurable Tilt Wheelchair App 20090045599 - Balcom; Nancy ; et al. | 2009-02-19 |
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