Erwin M. Lau

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Dolton, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Valve bag filler, handling and sealing system
- Patent number 4,066,108
- Issue date Jan 3, 1978
- Black Products Company
- Erwin M. Lau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Valve bag filler, handling and sealing system
- Patent number 4,003,188
- Issue date Jan 18, 1977
- Black Products Company
- Erwin M. Lau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Bag filling machine having combined inlet valve and level control
- Patent number 3,964,650
- Issue date Jun 22, 1976
- Black Products Co.
- Erwin M. Lau
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL