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Patent US2948933A successfully refreshed from Google Patents.
US2948933A
Expired / Lapsed
US
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Pipe molding machine and method
Assignee: Woodward Iron Co
•
Filing: 1957-11-12
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Granted: 1960-08-16
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Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Molloy
- 👤 John D Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:36
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2449900A
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US2563843A
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US2631342A
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US2682690A
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US2779071A
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US2757424A
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US2791013A
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US2731690A
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US2796643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |