Patent US531202A successfully refreshed from Google Patents.
US2861602A
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Collapsible mandrel for manufacturing reinforcing cages
Assignee: ANNA M SEDGES
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Filing: 1956-12-21
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Granted: 1958-11-25
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Expires: 1976-12-21
Abstract
No abstract record available.
Inventors
- 👤 Ralph D Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:51
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/28; B28B7/30; B21; B21F; B21F27/00; B21F27/12; B21F27/121; B21F27/122; B21F27/124; E; E04; E04C; E04C5/00; E04C5/01; E04C5/06; E04C5/0604; E04C5/0618
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US211247A
Cited
US459265A
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US1260786A
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US1334704A
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US1589456A
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US2151034A
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US2564482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |