US2700960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical pencil
Assignee: Individual
•
Filing: 1951-02-21
•
Granted: 1955-02-01
•
Expires: 1971-02-21
Abstract
No abstract record available.
Inventors
- 👤 Alfred T Liguori
- 👤 Francis P Pracilio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:14
CPC Classifications
B; B43; B43K; B43K21/00; B43K21/02; B43K21/08; B43K21/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US270959A
Cited
US296539A
Cited
US296538A
Cited
US338611A
Cited
US349914A
Cited
US561734A
Cited
US1142794A
Cited
US1406362A
Cited
US1869198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |