US3044329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for multi-diameter thread rolling
Assignee: Bethlehem Steel Corp
•
Filing: 1958-04-11
•
Granted: 1962-07-17
•
Expires: 1978-04-11
Abstract
No abstract record available.
Inventors
- 👤 Howard F Seibert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:55
CPC Classifications
B; B21; B21H; B21H3/00; B21H3/02; B21H3/022; B21H3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US408529A
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US470805A
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US1525536A
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US1521322A
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US1649929A
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US1912879A
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US2165008A
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US2161610A
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US2256269A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |