The story
Invented by John Bethell.
Etymology from Wiktionary, CC BY-SA 4.0.
Bethell process
Today it means: A process for treating timber with creosote and vacuum to preserve it. Full definition →
Today it means: A process for treating timber with creosote and vacuum to preserve it. Full definition →
Invented by John Bethell.
Etymology from Wiktionary, CC BY-SA 4.0.