Chang; Teng-An
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chang; Teng-An.The latest application filed is for "foam spring mattress configured with variable firmness".
- Chang; Teng-An - Taichang TW
- Chang; Teng-An - Teng-An TW
- Chang; Teng-An - Taichung TW
| Patent | Date |
|---|---|
| Foam spring mattress configured with variable firmness Grant 9,820,582 - Rawls-Meehan , et al. November 21, 2 | 2017-11-21 |
| Foam Spring Mattress Configured With Variable Firmness App 20170127847 - Rawls-Meehan; Martin B. ; et al. | 2017-05-11 |
| Foam spring mattress configured with variable firmness Grant 9,510,690 - Rawls-Meehan , et al. December 6, 2 | 2016-12-06 |
| Foam spring mattress configured with variable firmness Grant 9,504,333 - Rawls-Meehan , et al. November 29, 2 | 2016-11-29 |
| Foam spring Grant 9,282,828 - Rawls-Meehan , et al. March 15, 2 | 2016-03-15 |
| Foam Spring Mattress Configured With Variable Firmness App 20160029811 - Rawls-Meehan; Martin B. ; et al. | 2016-02-04 |
| Foam spring mattress with replaceable foam springs Grant 9,003,584 - Rawls-Meehan , et al. April 14, 2 | 2015-04-14 |
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