US3052266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for winding wire in making prestressed bevel-end concrete pipe
Assignee: American Pipe and Construction Co
•
Filing: 1958-04-28
•
Granted: 1962-09-04
•
Expires: 1978-04-28
Abstract
No abstract record available.
Inventors
- 👤 George E Huck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:27
CPC Classifications
B; B21; B21F; B21F17/00; B28; B28B; B28B21/00; B28B21/56; B28B21/60; B28B21/62; B28B21/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB746589A
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US2236107A
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US2327790A
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US2520402A
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US2452474A
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US2787042A
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US2775262A
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US2711291A
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US2717615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |