Patent US3237606A successfully refreshed from Google Patents.
US3237606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink reservoir
Assignee: Parker Pen Co
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Filing: 1960-11-17
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Granted: 1966-03-01
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Expires: 1980-11-17
Abstract
No abstract record available.
Inventors
- 👤 Clemens A Sonntag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:45
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/02; B43K5/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
AN INK RESERVOIR FOR HOLDING A SUPPLY OF INK FOR A PEN HAVING A WRITING ELEMENT, SAID RESERVOIR COMPRISING A ELONGATED TUBULAR BODY HAVING AN INNER WALL DEFINING A RELATIVELY NARROW SUBSTANTIALLY UNOBSTRUCTED INK SUPPLY CHAMBER THEREIN, SAID BODY BEING CLOSED AT ONE END REMOTE FROM THE END THEREOF FROM WHICH INK IS ADAPTED TO BE FED TO THE WRITING ELEMENT OF SAID PEN, SAID BODY BEING PROVIDED ON THE INTERNAL CHAMBER DEFINING WALL THEREOF WITH A LONGITUDINAL EXTENDING CAPILLARY GROOVES FOR FEEDING INK TOWARD THE END OF SAID CHAMBER FROM WHICH INK IS FED TO SAID WRITING ELEMENT.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |