Both of these systems can be counted among the various attempts to create a bag compression system based on mechanisms that differed from those patented by other manufacturers. Given the relative complexity and the low technical efficiency, both have not had any significant follow-up. Their rarity, however, makes them interesting from a collector's point of view.
- Patent n° US-1214310, of 1917-01-30, requested on 1916-09-18, of Stormont Josselyn, Crocker. Fountain-pen.
- Patent n° US-RE14397, of 1917-11-27, requested on 1917-07-18, of Stormont Josselyn, Crocker. Fountain-pen.
- Patent n° US-1390366, of 1921-09-13, requested on 1919-12-03, of Roderick J. Mackenzie, Crocker. Fountain-pen.