Patent US2817385A successfully refreshed from Google Patents.
US2817385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube spinning tool having rollers expanded radially by a conical spring pressed mandrel and a spring which releases the mandrel from the rollers
Assignee: United Aircraft Products Inc
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Filing: 1953-10-09
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Granted: 1957-12-24
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Expires: 1973-10-09
Abstract
No abstract record available.
Inventors
- 👤 Harry L Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:36
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/08; B21D39/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1111125A
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US1410464A
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US1506988A
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US1739980A
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US2355852A
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US2543007A
Cited
US2471614A
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US2546756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |