Complex sentence: When Windex was invented in 1933 by Harry R. Drackett, it was almost 100% solvent and highly flammable, and had to be sold in metal cans.
Split into simpler sentences: When Windex was invented in 1933 by Harry R. Drackett, it was almost 100% solvent. It was highly flammable and had to be sold in metal cans.