US2565556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball point fountain pen
Assignee: Individual
•
Filing: 1947-04-19
•
Granted: 1951-08-28
•
Expires: 1967-04-19
Abstract
No abstract record available.
Inventors
- 👤 Francis E Gruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:10
CPC Classifications
B; B43; B43K; B43K24/00; B43K24/02; B43K24/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US188721A
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US1437180A
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US1729165A
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US1493178A
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US1585843A
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US2274311A
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Cited
US2400679A
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US2427243A
Cited
US2426453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |