Patent US2642044A successfully refreshed from Google Patents.
US2642044A
Expired / Lapsed
US
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Pencil sharpener
Assignee: Klebes & Co
•
Filing: 1949-09-28
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Granted: 1953-06-16
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Expires: 1969-09-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:49
CPC Classifications
B; B43; B43L; B43L23/00; B43L23/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AT59722B
Cited
US1421063A
Cited
FR585193A
Cited
US1560291A
Cited
CH130177A
Cited
FR644330A
Cited
FR39883E
Cited
DE561385C
Cited
GB411723A
Cited
US2146890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |