Patent US2676570A successfully refreshed from Google Patents.
US2676570A
Expired / Lapsed
US
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Writing instrument
Assignee: David Kahn Inc
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Filing: 1949-08-01
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Granted: 1954-04-27
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Expires: 1969-08-01
Abstract
No abstract record available.
Inventors
- 👤 Harry J Fahringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:29
CPC Classifications
B; B43; B43K; B43K24/00; B43K24/10; B43K24/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191319623A
Cited
US1889550A
Cited
FR855338A
Cited
FR51255E
Cited
US2517522A
Cited
US2468258A
Cited
US2519502A
Cited
US2624315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |