US3133307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marking instrument
Assignee: Esterbrook Pen Co
•
Filing: 1962-11-08
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Granted: 1964-05-19
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Expires: 1982-11-08
Abstract
No abstract record available.
Inventors
- 👤 Harold E Steinberg
- 👤 Sr Frank W Roller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:44
CPC Classifications
B; B43; B43K; B43K8/00; B43K8/02; B43K8/04; B43K8/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
A MARKING INSTRUMENT COMPRISING AN INK RESERVOIR, A FILLER FOR INK IN SAID RESERVOIR, A NIB HOLDER AT ONE END OF SAID INK RESERVOIR, SAID NIB HOLDER INCLUDING AN ELONGATED NECK PROVIDED WITH AN AXIAL BORE THERETHROUGH COMMUNICATING AT ONE END WITH SAID INK RESERVOIR, A NIB POSITIONING MEMBER EXTENDING CROSSWISE OF SAID BORE ENGAGING IN ONE END OF SAID FILLER AND A NIB MOUNTED IN SAID BORE WITH ITS INNER END ABUTTING SAID NIB POSITIONING MEMBER AND ENGAGING SAID FILLER TO DRAW INK THEREFROM
References Cited (Backward Citations)
US1693330A
Cited
US3009602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |