US2551490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball point pen
Assignee: Scripto Inc
•
Filing: 1947-01-23
•
Granted: 1951-05-01
•
Expires: 1967-01-23
Abstract
No abstract record available.
Inventors
- 👤 Monie A Ferst
- 👤 Leon H Ashmore
- 👤 Sugarman Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:21
CPC Classifications
B; B43; B43K; B43K7/00; B43K7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US600299A
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DE366218C
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US1527971A
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US1935000A
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US2265055A
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CH218660A
Cited
US2390636A
Cited
US2438786A
Cited
US2428960A
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US2426453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |