John L Ingersoll List of directors and agents named John L Ingersoll. Found 2 results. JOHN L. INGERSOLL Registered Address: 4549 GROUSE PLACE WALDORF MD 20601 Appointed in one company. Go To Profile JOHN L INGERSOLL Registered Address: 8830 DARLEY DRIVE LAPLATA MD 20646 Appointed in one company. Go To Profile