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US2702022A
Expired / Lapsed
US
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Pencil sharpener
Assignee: Individual
•
Filing: 1951-10-09
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Granted: 1955-02-15
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Expires: 1971-10-09
Abstract
No abstract record available.
Inventors
- 👤 Carl I Fors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:48
CPC Classifications
B; B43; B43L; B43L23/00; B43L23/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US80145A
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US369785A
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DE618308C
Cited
US832446A
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US889135A
Cited
US1146431A
Cited
DE461925C
Cited
US1708128A
Cited
US1887422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |