Patent US2730692A successfully refreshed from Google Patents.
US2730692A
Expired / Lapsed
US
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Contact member for disc-shaped electrode connections
Assignee: Hartford National Bank and Trust Co
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Filing: 1953-03-18
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Granted: 1956-01-10
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Expires: 1973-03-18
Abstract
No abstract record available.
Inventors
- 👤 Jongsma Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:10
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/54; H01; H01J; H01J19/00; H01J19/42; H01J19/50; H01J21/00; H01J21/36; H01P; H01P7/00; H01P7/04; H01P7/06; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005; H01J2893/0008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2551630A
Cited
US2481171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |