Patent US2543577A successfully refreshed from Google Patents.
US2543577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube socket and holder for electrical parts
Assignee: Hartford National Bank and Trust Co
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Filing: 1946-05-09
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Granted: 1951-02-27
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Expires: 1966-05-09
Abstract
No abstract record available.
Inventors
- 👤 Hugenholtz Eduard Herman
- 👤 Krienen Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:15
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/74; H01R33/76; H01R33/7664
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189339A
Cited
US1850583A
Cited
FR633444A
Cited
US1688772A
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US1707702A
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FR719044A
Cited
DE538925C
Cited
US2074397A
Cited
US2071769A
Cited
FR806499A
Cited
US2450873A
Cited
US2453015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |