US2964251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll structure
Assignee: United States Pipe and Foundry Co LLC
•
Filing: 1956-09-21
•
Granted: 1960-12-13
•
Expires: 1976-09-21
Abstract
No abstract record available.
Inventors
- 👤 Martin L Samuels
- 👤 John E Pettit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:30
CPC Classifications
B; B23; B23P; B23P11/00; B23P11/02; B02; B02C; B02C4/00; B02C4/28; B02C4/30; B02C4/305; B21; B21B; B21B27/00; B21B27/02; B21B27/03; B22; B22D; B22D19/00; B22D19/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1090601A
Cited
US1511842A
Cited
US1742454A
Cited
US2097709A
Cited
US2219085A
Cited
US2812571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |