having automatic means for changing type-characters

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Patents Grantslast 30 patents

Information Patent Grant
Stamping system and method using a portable communication device
- Patent number 8,253,983
- Issue date Aug 28, 2012
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Xin Lu
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method for affixing a seal impression on a paper document and hand-...
- Patent number 8,047,132
- Issue date Nov 1, 2011
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Xin Lu
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
3626845
- Patent number 3,626,845
- Issue date Dec 14, 1971
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
1808089
- Patent number 1,808,089
- Issue date Jun 2, 1931
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS