US2631351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for molding tubular
Assignee: —
•
Filing: —
•
Granted: 1953-03-17
•
Expires: 1970-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
B; B29; B29D; B29D23/00; B29C; B29C48/00; B29C48/03; B29C48/09; B29C43/00; B29C43/32; B29C43/36; B29C43/361
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US965007A
Cited
US1029561A
Cited
US1550126A
Cited
US2189071A
Cited
US2211742A
Cited
US2434690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |