Patent US3456581A successfully refreshed from Google Patents.
US3456581A
Expired / Lapsed
US
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Devices for drying glued pencil blanks
Assignee: Bleistiftmaschinenbau Dipl-Ing Karl Zuber
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Filing: 1966-11-01
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Granted: 1969-07-22
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Expires: 1986-11-01
Abstract
No abstract record available.
Inventors
- 👤 Karl Zuber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:03
CPC Classifications
B; B43; B43K; B43K19/00; B43K19/16; B43K19/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1454520A
Cited
US1472185A
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US2537918A
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US2661100A
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US2943353A
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US3079607A
Cited
US3288057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |