Patent US2681144A successfully refreshed from Google Patents.
US2681144A
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Assignee: ROBERT E BECKWITH
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Filing: 1950-08-31
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Granted: 1954-06-15
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Expires: 1970-08-31
Abstract
No abstract record available.
Inventors
- 👤 Turner Estie Le Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:58
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/70; B65D85/72; B65D85/78; B65D5/00; B65D5/42; B65D5/44; B65D5/48; B65D5/48024; B65D5/48046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1126274A
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US1880897A
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GB381057A
Cited
US1995482A
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US2192412A
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US2575829A
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US2521403A
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US2591812A
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US2517756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |