Patent US3203025A successfully refreshed from Google Patents.
US3203025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing instrument
Assignee: Pacific Research Laboratory
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Filing: 1962-08-15
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Granted: 1965-08-31
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Expires: 1982-08-15
Abstract
No abstract record available.
Inventors
- 👤 Schreur Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:29
CPC Classifications
B; B43; B43K; B43K8/00; B43K8/02; B43K8/04; B43K8/06; B43K8/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A NIB ADAPTED TO BE MOUNTED IN A HOLDER FOR A SUPPLY OF WRITING FLUID, SAID NIB COMPRISING AN ELONGATED THIN-WALLED SLIGHTLY FLEXIBLE TUBE OPEN AT ITS OPPOSITE ENDS, SAID TUBE HAVING ONE END THEREOF ROUNDED TO PROVIDE A SMOOTH GLIDE SURFACE WHEN SAID NIB IS PLACED IN CONTACT WITH A SURFACE TO BE WRITTEN UPON AT A CONVENTIONAL WRITING ANGLE FOR A HAND-HELD WRITING INSTRUMENT, SAID TUBING BEING FORMED OF SEMI-RIGID WEAR-RESISTING MATERIAL AND BEING CHANGED WITH A SNUGLY-FITTING FLEXIBLE CORE COMPRISING A MULTIPLICITY OF FILAMENTS EXTENDING THE LENGTH OF SAID TUBE, THE OUTER EXPOSED END OF SAID FILAMENTS BEING CONTOURED TO PROVIDE AN OUTWARDLY PROTRUDING SEMISPHERICAL SURFACE MERGING SMOOTHLY WITH THE SIMILARLY ROUNDED GLIDE SURFACE ON THE OUTER END OF SAID FLEXIBLE TUBE AND WHICH CORE OF FILAMENTS IS EFFECTIVE TO FEED INK TO A WRITING SURFACE IN CONTACT THEREWITH AND WITH SAID GLIDE SURFACE.
Claim 2
Dependent Claim
147 words
A NIB ADAPTED TO BE MOUNTED IN A HOLDER FOR A SUPPLY OF WRITING FLUID, SAID NIB COMPRISING AN ELONGATED THIN-WALLED SLIGHTLY FLEXIBLE TUBE OPEN AT ITS OPPOSITE ENDS, SAID TUBE HAVING ONE END THEREOF ROUNDED TO PROVIDE A SMOOTH GLIDE SURFACE WHEN SAID NIB IS PLACED IN CONTACT WITH A SURFACE TO BE WRITTEN UPON AT A CONVENTIONAL WRITING ANGLE FOR A HAND-HELD WRITING INSTRUMENT, SAID TUBING BEING FORMED OF SEMI-RIGID WEAR-RESISTING MATERIAL AND BEING CHANGED WITH A SNUGLY-FITTING FLEXIBLE CORE COMPRISING A MULTIPLICITY OF FILAMENTS EXTENDING THE LENGTH OF SAID TUBE, THE OUTER EXPOSED END OF SAID FILAMENTS BEING CONTOURED TO PROVIDE AN OUTWARDLY PROTRUDING SEMISPHERICAL SURFACE MERGING SMOOTHLY WITH THE SIMILARLY ROUNDED GLIDE SURFACE ON THE OUTER END OF SAID FLEXIBLE TUBE AND WHICH CORE OF FILAMENTS IS EFFECTIVE TO FEED INK TO A WRITING SURFACE IN CONTACT THEREWITH AND WITH SAID GLIDE SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |