Patent US2463054A successfully refreshed from Google Patents.
US2463054A
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Apparatus for heating insulating material by subjecting it to a highfrequency field of electric force
Assignee: Balfour Beatty PLC
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Filing: 1945-04-09
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Granted: 1949-03-01
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Expires: 1965-04-09
Abstract
No abstract record available.
Inventors
- 👤 Quayle Joshua Creer
- 👤 Jones Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:23
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/45; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/7394; B29C66/73941; B29C66/80; B29C66/81; B29C66/812; B29C66/8126; B29C66/81262; B29C66/81263; B29C66/818; B29C66/8187; B29C66/81871; B29C66/71; B29C66/8122; B29C66/8124; B29C66/81241; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806846A
Cited
US1555258A
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US2079708A
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US2341617A
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US2370624A
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US2404191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |