Patent US2644978A successfully refreshed from Google Patents.
US2644978A
Expired / Lapsed
US
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Closure member for tube ends
Assignee: United Carr Fastener Corp
•
Filing: 1950-06-09
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Granted: 1953-07-14
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Expires: 1970-06-09
Abstract
No abstract record available.
Inventors
- 👤 Philip D Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:01
CPC Classifications
A; A47; A47B; A47B91/00; A47B91/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806945A
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US870770A
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GB191109734A
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US1937438A
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FR748966A
Cited
US2120806A
Cited
US2266270A
Cited
US2416069A
Cited
US2546492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |