Patent US2434236A successfully refreshed from Google Patents.
US2434236A
Expired / Lapsed
US
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Ceramic insulator
Assignee: Hartford National Bank and Trust Co
•
Filing: 1943-01-18
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Granted: 1948-01-06
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Expires: 1963-01-18
Abstract
No abstract record available.
Inventors
- 👤 Verwey Evert Johannes Willem
- 👤 Marinus Gerard Van Bruggen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:42
CPC Classifications
H; H01; H01B; H01B19/00; Y; Y10; Y10S; Y10S264/00; Y10S264/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2152655A
Cited
DE391919C
Cited
DE588271C
Cited
GB445269A
Cited
US2071452A
Cited
US2177943A
Cited
US2214931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |