Patent US3012604A successfully refreshed from Google Patents.
US3012604A
Expired / Lapsed
US
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Method of and apparatus for the corrugation of paper tubes
Assignee: Frankische Isolierrohr and Metallwaren Werke Gehrueder Kirchner
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Filing: 1959-12-22
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Granted: 1961-12-12
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Expires: 1979-12-22
Abstract
No abstract record available.
Inventors
- 👤 Zieg Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:15
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/20; B21C37/205; B31; B31F; B31F1/00; B31F1/20; B31F1/205
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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |