US2748442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe forming machine
Assignee: Individual
•
Filing: 1954-03-15
•
Granted: 1956-06-05
•
Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Butcher Albert Floyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:13
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/028; F16L1/038
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US220757A
Cited
US1309878A
Cited
US654213A
Cited
US1146477A
Cited
US1292250A
Cited
US1606160A
Cited
GB245964A
Cited
GB654982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |