US3126874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Figure
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:39
CPC Classifications
B; B43; B43K; B43K8/00; B43K8/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A FOUNTAIN PEN HAVING A BODY AND A CAP REMOVABLY SECURED TO ONE END THEREOF AND A WRITING POINT AT THE OPPOSITE END, AND INK CONTAINER WITHIN SAID BODY, A COMPRESSIBLE CELLULAR CAPILLARY MATERIAL WITHIN SAID CONTAINER, A PLUNGER SLIDABLY DISPOSED IN THE UPPER PORTION OF SAID CONTAINER, THE CAPILLARY MATERIAL SECURED AT ITS UPPER END TO SAID PLUNGER AND AT ITS LOWER END TO SAID CONTAINER, A GUIDE TUBE SECURED TO THE LOWER END OF SAID CONTAINER BENEATH SAID CAPILLARY MATERIAL, A WRITING TUBE THREADEDLY SECURED TO SAID GUIDE TUBE, INK INLET OPENINGS RADIALLY DISPOSED IN THE SIDE WALL OF SAID WRITING TUBE, MEANS FOR OPENING AND CLOSING SAID OPENINGS, AND BREATHER OPENINGS IN SAID INK CONTAINER TO COMPENSATE FOR VARIATIONS IN ATMOSPHERIC PRESSURES.
Claim 2
Dependent Claim
125 words
A FOUNTAIN PEN HAVING A BODY AND A CAP REMOVABLY SECURED TO ONE END THEREOF AND A WRITING POINT AT THE OPPOSITE END, AND INK CONTAINER WITHIN SAID BODY, A COMPRESSIBLE CELLULAR CAPILLARY MATERIAL WITHIN SAID CONTAINER, A PLUNGER SLIDABLY DISPOSED IN THE UPPER PORTION OF SAID CONTAINER, THE CAPILLARY MATERIAL SECURED AT ITS UPPER END TO SAID PLUNGER AND AT ITS LOWER END TO SAID CONTAINER, A GUIDE TUBE SECURED TO THE LOWER END OF SAID CONTAINER BENEATH SAID CAPILLARY MATERIAL, A WRITING TUBE THREADEDLY SECURED TO SAID GUIDE TUBE, INK INLET OPENINGS RADIALLY DISPOSED IN THE SIDE WALL OF SAID WRITING TUBE, MEANS FOR OPENING AND CLOSING SAID OPENINGS, AND BREATHER OPENINGS IN SAID INK CONTAINER TO COMPENSATE FOR VARIATIONS IN ATMOSPHERIC PRESSURES.
References Cited (Backward Citations)
US2640216A
Cited
BE498040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |