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Patent US2802310A successfully refreshed from Google Patents.
US2802310A
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US
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Hypodermic needle sharpener
Assignee: Individual
•
Filing: 1955-07-13
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Granted: 1957-08-13
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Expires: 1975-07-13
Abstract
No abstract record available.
Inventors
- 👤 Chaplik Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:58
CPC Classifications
B; B24; B24B; B24B19/00; B24B19/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US975966A
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US1648180A
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US1841411A
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US1981174A
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US2071563A
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US2261488A
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US2410494A
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US2566809A
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US2663976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |