US3464253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for rounding pipe
Assignee: United States Pipe and Foundry Co LLC
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Filing: 1967-06-29
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Granted: 1969-09-02
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Expires: 1987-06-29
Abstract
No abstract record available.
Inventors
- 👤 John H Beyer
- 👤 Alfred Boyles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:09
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/30; B21D; B21D1/00; B21D1/06; B21D1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |