Alexey Nikolaevich Bogatchev

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St. Petersburg, RU

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Patents Grantslast 30 patents

Information Patent Grant
Self-contained underwater re-breathing apparatus
- Patent number 6,817,359
- Issue date Nov 16, 2004
- Alexander Roger Deas
- A62 - LIFE-SAVING FIRE-FIGHTING

Patents Applicationslast 30 patents

Information Patent Application
Self-contained underwater re-breathing apparatus
- Publication number 20030188745
- Publication date Oct 9, 2003
- Alexander Roger Deas
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT