US3418056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wick type writing instrument
Assignee: Parker Pen Co
•
Filing: 1965-11-29
•
Granted: 1968-12-24
•
Expires: 1985-11-29
Abstract
No abstract record available.
Inventors
- 👤 William H Derbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:49
CPC Classifications
B; B43; B43K; B43K8/00; B43K8/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2392840A
Cited
US2554654A
Cited
FR1006596A
Cited
US3181539A
Cited
US3088160A
Cited
US3221360A
Cited
US3332400A
Cited
US3355239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |