US2784699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing implements
Assignee: WA Sheaffer Pen Co
•
Filing: 1952-11-06
•
Granted: 1957-03-12
•
Expires: 1972-11-06
Abstract
No abstract record available.
Inventors
- 👤 Craig R Sheaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:21
CPC Classifications
B; B43; B43K; B43K5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1567527A
Cited
GB642437A
Cited
US2462929A
Cited
US2522554A
Cited
US2603189A
Cited
US2670711A
Cited
US2648309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |