Patent US2989778A successfully refreshed from Google Patents.
US2989778A
Expired / Lapsed
US
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Means for making strengthened pipe from drawable material
Assignee: Frenkel AG C D
•
Filing: 1955-02-11
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Granted: 1961-06-27
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Expires: 1975-02-11
Abstract
No abstract record available.
Inventors
- 👤 Frenkel Meyer Schlioma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:39
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/82; B29C48/00; B29C48/001; B29C48/03; B29C48/09; B29C48/15; B29C48/151; B29C48/152; B29C48/153; B29C48/25; B29C48/30; B29C48/32; B29C48/33; B29C48/0018; B29C48/002; B29C48/0021; B29C48/0022; B29C48/13; B29C48/16; B29C48/18; B29C48/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US121166A
Cited
US1146477A
Cited
US1445724A
Cited
US1648475A
Cited
US1781074A
Cited
US2034731A
Cited
US2078565A
Cited
US2169315A
Cited
US2193040A
Cited
US2225026A
Cited
US2384521A
Cited
GB618536A
Cited
US2556276A
Cited
US2676356A
Cited
US2608720A
Cited
US2617167A
Cited
US2770837A
Cited
US2752633A
Cited
US2744287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |