What Does 'WD-40' Stand For?

Does the name of the iconic household product WD-40 reveal something about its invention?
The lubricating spray WD-40 is so named because it was the product of the 40th attempt at creating a water displacing substance.

WD40 - What Is It & What Can You Use It For? - Toolstop

WD-40 - Wikipedia

What does WD-40 stand for?, Trivia Questions

What does WD-40 stand for? : r/SlowNewsDay

History - WD-40 Company

WD-40 - Wikipedia

History - WD-40 Company

Lube-Tech Automotive - What does WD-40 stand for? WD-40 stands for Water Displacement perfected on the 40th try. It took them 40 attempts to get the water displacing formula worked out! #lubetech #

Product 1: More Of A Good Thing! Like All Wd-40 Multi-Use Products This 1 Gallon Drives Out Moisture And Quickly Dries Out Electrical Systems To

WD-40 Multi-Use Product, One Gallon & Specialist Silicone Lubricant with SMART STRAW SPRAYS 2 WAYS, 11 OZ

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Question Of The Day: Why does WD-40 stop hinges from squeaking? – How It Works

History - WD-40 Company

WD-40 10152 Multi-Use Product Spray with Smart Straw, 12-Ounce (Pack of 12): Industrial Lubricants: : Tools & Home Improvement