US3233275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing implement
Assignee: WA Sheaffer Pen Co
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Filing: 1963-09-18
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Granted: 1966-02-08
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Expires: 1983-09-18
Abstract
No abstract record available.
Inventors
- 👤 Lewis C Hansen
- 👤 Richard J Mansheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:56
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/18; B43K5/1818; B43K5/1827; B43K5/1836; B43K5/1845
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A WRITING IMPLEMENT, THE COMBINATION OF A RESERVOIR SECTION HAVING AN OPEN END, A GRIPPING SECTION HAVING A REARWARD MOUNTING PORTION ADAPTED TO BE DETACHABLY ASSEMBLED WITH SAID OPEN END OF SAID RESERVOIR SECTION, SAID GRIPPING SECTION DEFINING A LONGITUDINAL APERTURE EXTENDING THERETHROUGH, AN ABSORBENT MARKING TIP DISPOSED FOR RECIPROCAL MOVEMENT WITHIN SAID APERTURE AND EXTENDING BEYOND BOTH ENDS OF SAID GRIPPING SECTION, SAID MARKING TIP HAVING A LATERALLY DISTENDED HEAD DISPOSED REARWARDLY OF AND SIZED TO ABUT THE REARWARD END OF SAID GRIPPING SECTION TO RESTRICT FORWARD MOVEMENT OF SAID MARKING TIP, AND MEANS OPERABLE BY SAID TIP FOR SELECTIVELY BLOCKING FLUID FLOW SAID RESERVOIR SECTION INTO THE APERTURE OF SAID GRIPPING SECTION.
Claim 2
Dependent Claim
115 words
IN A WRITING IMPLEMENT, THE COMBINATION OF A RESERVOIR SECTION HAVING AN OPEN END, A GRIPPING SECTION HAVING A REARWARD MOUNTING PORTION ADAPTED TO BE DETACHABLY ASSEMBLED WITH SAID OPEN END OF SAID RESERVOIR SECTION, SAID GRIPPING SECTION DEFINING A LONGITUDINAL APERTURE EXTENDING THERETHROUGH, AN ABSORBENT MARKING TIP DISPOSED FOR RECIPROCAL MOVEMENT WITHIN SAID APERTURE AND EXTENDING BEYOND BOTH ENDS OF SAID GRIPPING SECTION, SAID MARKING TIP HAVING A LATERALLY DISTENDED HEAD DISPOSED REARWARDLY OF AND SIZED TO ABUT THE REARWARD END OF SAID GRIPPING SECTION TO RESTRICT FORWARD MOVEMENT OF SAID MARKING TIP, AND MEANS OPERABLE BY SAID TIP FOR SELECTIVELY BLOCKING FLUID FLOW SAID RESERVOIR SECTION INTO THE APERTURE OF SAID GRIPPING SECTION.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |