Patent US2565715A successfully refreshed from Google Patents.
US2565715A
Expired / Lapsed
US
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Pencil with lead advancing and tensioning mechanism
Assignee: Individual
•
Filing: 1948-12-10
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Granted: 1951-08-28
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Expires: 1968-12-10
Abstract
No abstract record available.
Inventors
- 👤 Becker Henry
- 👤 Melnikoff Zachary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:07
CPC Classifications
B; B43; B43K; B43K29/00; A; A45; A45D; A45D40/00; A45D40/20; A45D40/205; A45D2040/201; A45D2040/202; A45D2040/208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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 |