US3554658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing instrument construction
Assignee: Gillette Co LLC
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Filing: 1969-06-18
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Granted: 1971-01-12
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Expires: 1989-06-18
Abstract
Abstract A POCKET-TYPE WRITING INSTRUMENT CONSTRUCTION INCLUDING A REMOVABLE REPLACEABLE VAPOR-PROOF, IMPERMEABLE CARTRIDGE OR HOUSING MEANS HAVING AN AIR VENT ADJACENT A WRITING TIP MEMBER OF WICK-LIKE TYPE AND PRESENTING A YIELDABLE SEALING SURFACE TO INTERNAL SURFACES ON AN INSTRUMENT BODY MEANS TO PROVIDE AN AIR SEAL BETWEEN SAID CARTRIDGE AND BODY MEANS, AND FURTHER SEAL MEANS BETWEEN SAID BODY MEANS AND A WRITING INSTRUMENT CAP COVER MEANS FOR THE WRITING TIP WHEREBY EVAPORATION AND LOSS OF VAPORIZABLE INK COMPONENTS DURING STORAGE OR NON-USE OF THE WRITING INSTRUMENT IS INHIBITED AND THE OVERALL WRITING LIFE OF THE INSTRUMENT IS ENHANCED.
Inventors
- 👤 Curtis L Malm
- 👤 Henry J Loewenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:14
CPC Classifications
B; B43; B43K; B43K23/00; B43K23/08; B43K23/12; B43K23/126; B43K8/00; B43K8/02
Claims Analysis
Total Claims: 0
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |