US2802450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fountain pens
Assignee: Parker Pen Co
•
Filing: 1954-02-03
•
Granted: 1957-08-13
•
Expires: 1974-02-03
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Wittnebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:11
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US884412A
Cited
GB642437A
Cited
US2554654A
Cited
US2528408A
Cited
US2670711A
Cited
DE808420C
Cited
US2642043A
Cited
US2648309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |