US2989778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for making strengthened pipe from drawable material
Assignee: Frenkel AG C D
•
Filing: 1955-02-11
•
Granted: 1961-06-27
•
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 11:17
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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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 |