Patent US2734551A successfully refreshed from Google Patents.
US2734551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
berdis
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:39
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US417553A
Cited
US1054022A
Cited
US1807274A
Cited
US1975846A
Cited
US1984778A
Cited
US2037067A
Cited
US2087010A
Cited
US2163504A
Cited
US2267175A
Cited
US2508977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |