John K. Donovan

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Florence, SC, US

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Patents Grantslast 30 patents

Information Patent Grant
Modular bulk material handling station
- Patent number 6,390,152
- Issue date May 21, 2002
- Aluminum Ladder Company
- John K. Donovan
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...