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About Pen Repairs
1.Cork Seals  see the corresponding chapter in Pelikan Pen Repairs
2. Pelikan Pen Repairs   An article written by Martin Lehman with additions made by Rick Propas and Tom Westerich

Filling systems
Introduction 2. Pistonfiller pens
1. Pen Sacs as a reservoir 3. Capillary fillers
1.a. Crescent Fillers 4. Eyedropper pens
1.b. Leverfillers 5. Safety filler pens
1.c. Pushbuttonfillers 6. Vacumatics by Parker
1.d. Pushknobfillers  by Mont Blanc 7. Vacuumfillers by Sheaffer and Wahl
1.e. Touchdown  by Sheaffer

Raw Materials
1. Hard Rubber 2.Bakelite
3. Plastics 4. Celluloid
5. Galalith 7. Acrilics PMMA

Important Brands, short portraits
1. Waterman 2. Parker
3. Sheaffer 4. Wahl Eversharp
5. Mabie Todd 6. Conklin
7. Kaweco 8. Soennecken
9. Osmia 10. Pelikan Günther Wagner
11. Mont Blanc 12. Geha
13. Conway Steward 14. Omas
15. Astoria 15. Omas Comments  by Bern Landolf