Patent US3023650A successfully refreshed from Google Patents.
US3023650A
Expired / Lapsed
US
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Hand-operated tube-bending machine
Assignee: MARIE C STERNER
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Filing: 1960-02-01
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Granted: 1962-03-06
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Expires: 1980-02-01
Abstract
No abstract record available.
Inventors
- 👤 Gustav A Sall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:40
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/06; B21D7/063; B21D11/00; B21D11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE553642A
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US1321663A
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US1368906A
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US1775762A
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DE464004C
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US1722178A
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CH158315A
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US2095172A
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US2380898A
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US2701001A
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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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |