US3669721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the continuous production of coated tubular structures
Assignee: Dow Produktions und Vertriebs GmbH and Co OHG
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Filing: 1970-02-11
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Granted: 1972-06-13
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Expires: 1990-02-11
Abstract
Abstract A PROCESS FOR THE CONTINUOUS PRODUCTION OF COATED TUBULAR STRUCTURES BY SIMULTANEOUSLY VENTING FROM ONE SIDE AND IMPREGNATING WITH A COATING MATERIAL FROM THE OTHER SIDE, A TUBULAR STRUCTURE AND AN APPARATUS FOR CARRYING OUT THE PROCESS.
Inventors
- 👤 Eugen Jager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:31
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/04; B05D3/0493; A; A22; A22C; A22C13/00; A22C13/0013; B05C; B05C9/00; B05C9/04; B05C9/045; B05D7/00; B05D7/22; B05D7/222; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/919; B05D2254/00; B05D2254/04; B29C48/03; B29C48/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |