Patent US3518732A successfully refreshed from Google Patents.
US3518732A
Expired / Lapsed
US
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Pipe forming machine with rotatable platform carrying rotatable supporting plate
Assignee: Quinn Wire and Iron Works Inc
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Filing: 1967-12-04
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Granted: 1970-07-07
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Expires: 1987-12-04
Abstract
No abstract record available.
Inventors
- 👤 Robert G Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:28
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/76; B28B21/02; B28B21/10; B28B21/22; Y; Y10; Y10S; Y10S425/00; Y10S425/218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2980978A
Cited
US3083433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |