US2926411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for making concrete pipes
Assignee: Individual
•
Filing: 1957-08-19
•
Granted: 1960-03-01
•
Expires: 1977-08-19
Abstract
No abstract record available.
Inventors
- 👤 Steiro Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:15
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/90; B28B21/02; B28B21/10; B28B21/14; B28B21/16; B28B21/76; B28B21/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US777086A
Cited
US1258237A
Cited
US1433204A
Cited
US1787449A
Cited
US1774977A
Cited
US2296018A
Cited
FR1108795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |