Patent US2936020A successfully refreshed from Google Patents.
US2936020A
Expired / Lapsed
US
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Apparatus for expanding tubular bodies
Assignee: Uniroyal Inc
•
Filing: 1955-07-07
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Granted: 1960-05-10
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Expires: 1975-07-07
Abstract
No abstract record available.
Inventors
- 👤 Harold A Thornburg
- 👤 William R Epes
- 👤 Walter G Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:24
CPC Classifications
B; B21; B21D; B21D41/00; B21D41/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB160585A
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US789867A
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US1078583A
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US1419929A
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US1536433A
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US1596538A
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US1525288A
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US2638802A
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US2575938A
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US2627891A
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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) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |