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US2980411A
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US
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Strip threading device
Assignee: Selas Corp of America
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Filing: 1958-09-25
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Granted: 1961-04-18
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Expires: 1978-09-25
Abstract
No abstract record available.
Inventors
- 👤 Robert E Buckholdt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:17
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2600574A
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US1414489A
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US2154844A
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US2189983A
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US2581026A
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US2549666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |