Patent US3545614A successfully refreshed from Google Patents.
US2835307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube expander with rotary work engaging members
Assignee: GRISCOM RUSSEIL Co
•
Filing: 1953-06-23
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Granted: 1958-05-20
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Expires: 1973-06-23
Abstract
No abstract record available.
Inventors
- 👤 Jorgen A Jorgensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:37
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/08; B21D39/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2409219A
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US2736950A
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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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |