Patent US2640968A successfully refreshed from Google Patents.
US2640968A
Expired / Lapsed
US
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Electric cup connector
Assignee: LIBERTY ELECTRIC Co
•
Filing: 1950-06-07
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Granted: 1953-06-02
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Expires: 1970-06-07
Abstract
No abstract record available.
Inventors
- 👤 Frederic F Lehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:11
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/24; A47J36/2444; A47J36/2461; A47J36/2466; Y; Y10; Y10S; Y10S439/00; Y10S439/929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1034810A
Cited
US1227935A
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US1755166A
Cited
US1704270A
Cited
US2129286A
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US2465418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |