Patent US2870486A successfully refreshed from Google Patents.
US2870486A
Expired / Lapsed
US
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Process for the production of tubes
Assignee: Bayer AG
•
Filing: 1954-11-22
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Granted: 1959-01-27
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Expires: 1974-11-22
Abstract
No abstract record available.
Inventors
- 👤 Wagner Herbert
- 👤 Eisenmann Karl-Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:31
CPC Classifications
B; B29; B29C; B29C39/00; B29C39/003; B29C39/006; B29C48/00; B29C48/022; B29C48/03; B29C48/09; B29C53/00; B29C53/56; B29C53/58; B29C53/60; B29K; B29K2301/00; B29K2301/10; Y; Y10; Y10S; Y10S264/00; Y10S264/53
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1261317A
Cited
US1455946A
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US1650687A
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US2456650A
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US2450457A
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US2683900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |