After inventing the first universal refill which could be used in most ballpoint pens Paul Fisher went on to create the first pressurized ballpoint pen refill. The Fisher Space pen refill was made of a special semisolid ink and then pressurized with nitrogen.
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After inventing the first universal refill which could be used in most ballpoint pens Paul Fisher went on to create the first pressurized ballpoint pen refill. The Fisher Space pen refill was made of a special semisolid ink and then pressurized with nitrogen.
eBay
eBay
After inventing the first universal refill which could be used in most ballpoint pens Paul Fisher went on to create the first pressurized ballpoint pen refill. The Fisher Space pen refill was made of a special semisolid ink and then pressurized with nitrogen.
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Fisher Space Pen is yet another great breakthrough from space research. Ordinary pens rely on gravity to write. Paul Fisher developed such a pen. Fisher Space Pens have been used on EVERY Space Shuttle mission, both USA and Russian.
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They are the only refills that will write at any angle because they do not rely on gravity, and have a shelf life of 100 years. The SPR Series Refills fits all Fisher Pens except for the Triple action or Quad action pens; they take the "SU" Series.
eBay
eBay
After inventing the first universal refill which could be used in most ballpoint pens Paul Fisher went on to create the first pressurized ballpoint pen refill. The Fisher Space pen refill was made of a special semisolid ink and then pressurized with nitrogen.
eBay