US2462070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed electric insulator
Assignee: International Standard Electric Corp
•
Filing: 1945-01-01
•
Granted: 1949-02-22
•
Expires: 1965-01-01
Abstract
No abstract record available.
Inventors
- 👤 Chatterjea Prafulla Kumar
- 👤 Powers Stephen John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:25
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/32; H01J5/40; H01J5/42; H01J2893/00; H01J2893/0033; H01J2893/0034
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US904369A
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US1093997A
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US2056861A
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US2024172A
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US2079354A
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US2147418A
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US2200694A
Cited
US2190302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |