Patent US2769427A successfully refreshed from Google Patents.
US2769427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing implements
Assignee: WA Sheaffer Pen Co
•
Filing: 1951-11-17
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Granted: 1956-11-06
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Expires: 1971-11-17
Abstract
No abstract record available.
Inventors
- 👤 Lynn P Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:55
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/02; B43K5/04
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |