James Dewar invented this and never made a penny from it.
He built the vacuum flask in 1892 to hold liquefied gases in his lab, published the design, and declined to patent it on the grounds that it belonged to science. A German glassblower named it Thermos, took it to market, and built a company on it. Dewar sued and lost.
Twelve hours hot, twenty-four cold, in a design its creator gave away.
Specifications ⊙ Stainless steel and plastic · 20 oz (0.6 L) ⊙ Double-wall vacuum, tapered slim profile ⊙ Keeps drinks cold 24 hours, hot 12 hours ⊙ Press-on lid with color-matched straw ⊙ Matte or glossy powder-coated finish ⊙ Non-toxic and BPA-free · blank product sourced from China ⊙ Hand wash only
Use code INNERCIRCLE for 10% off your first order.
