US3399019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge safety means for refillable pen
Assignee: Filler and Fiebig GmbH
•
Filing: 1965-12-29
•
Granted: 1968-08-27
•
Expires: 1985-12-29
Abstract
No abstract record available.
Inventors
- 👤 Koelichen Harald Karol Andreas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:21
CPC Classifications
B; B43; B43K; B43K8/00; B43K8/16; B43K8/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191030128A
Cited
US2623227A
Cited
US2771218A
Cited
US2829801A
Cited
US3087463A
Cited
GB954301A
Cited
GB929331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |