| D823913 |
Sealer |
Richard Chang |
2018-07-24 |
| 7700897 |
Hand-held electric sealer having a detachable electric sealing module |
Richard Chang |
2010-04-20 |
| 7464845 |
Hand-held staple gun having a safety device |
— |
2008-12-16 |
| 7312421 |
Detachable heat sealing apparatus |
Richard Chang |
2007-12-25 |
| 7291810 |
Hand-held electric heat sealer |
Richard Chang |
2007-11-06 |
| 7034252 |
Hand-held electric heat sealer |
Richard Chang |
2006-04-25 |
| 6729525 |
Structure of a two dimensional positioning nailing machine |
— |
2004-05-04 |
| 6630647 |
Hand-held electric heat sealer |
Richard Chang |
2003-10-07 |
| D454894 |
Mini handy sealer |
— |
2002-03-26 |
| 6326594 |
Hand-held electric sealer with safety means |
Richard Chang |
2001-12-04 |
| 6064038 |
Hand-held electric sealer with detachable heat resistant cover sheet |
Richard Chang, Mario B. Accumanno |
2000-05-16 |
| 6040559 |
Electric heat pen with sandwiched heater element |
— |
2000-03-21 |
| 5854466 |
Hand-held pivoting electric heat sealing apparatus |
— |
1998-12-29 |
| D401950 |
Handy electric heat sealing apparatus |
— |
1998-12-01 |