CPC B64B1/62
Revision as of 20:21, 26 June 2017 by Econterms (talk | contribs) (Econterms moved page B64B1/62 to CPC B64B1/62 without leaving a redirect)
| Enclosing categories | B64B1/58 |
|---|---|
| Subcategories | |
| Keywords | |
| Start year | |
| End year |
- Controlling gas pressure, heating, cooling, or discharging gas
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