Patent US2777500A successfully refreshed from Google Patents.
US2777500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube bending apparatus and method
Assignee: Flexonics Corp
•
Filing: 1955-03-04
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Granted: 1957-01-15
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Expires: 1975-03-04
Abstract
No abstract record available.
Inventors
- 👤 Ekholm Carl Roger
- 👤 Robert L Krabbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:41
CPC Classifications
B; B21; B21D; B21D9/00; B21D9/05; B21D9/07; B21D9/073; B21D9/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US203842A
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US533965A
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US654373A
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US735307A
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US878604A
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US1007834A
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US1135875A
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US1590237A
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US1575928A
Cited
GB567753A
Cited
GB571191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |