US3606556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fountain pen
Assignee: Parker Pen Co
•
Filing: 1970-04-29
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Granted: 1971-09-20
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Expires: 1990-04-29
Abstract
Abstract A FOUNTAIN PEN HAVING AN INTEGRAL NIBBLED-POINT AND SHELL PORTION PROVIDING GREATER COLLECTOR CAPACITY, A CLUTCH RING HAVING ELEMENTS ADAPTED TO EXTEND THROUGH OPENINGS IN THE INTEGRAL PORTION FOR FIRMLY ATTACHING THE PORTION TO INTERNAL PENSTRUCTURES AND FOR FRICTIONALLY RESISTING MOVEMENT OF A CAP ASSEMBLY WHEN SAID CAP IS COVERING THE POINT END OF THE PEN, ADJUSTABLE MEMBERS EXERT, A FORCE ON TINES COMPRISING THE NIB TO VARY THEIR SEPARATION FOR REGULATING VARIATIONS IN THE LINE BREADTH RESULTING FROM USE OF THE PEN.
Inventors
- 👤 Homer T Green
- 👤 Frederick R Wittnebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:52
CPC Classifications
B; B43; B43K; B43K5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |