US2989618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric resistance heating and forming of articles
Assignee: United Kingdom Atomic Energy Authority
•
Filing: 1958-03-14
•
Granted: 1961-06-20
•
Expires: 1978-03-14
Abstract
No abstract record available.
Inventors
- 👤 French Ernest John
- 👤 Hannah Malcolm Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:15
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1339966A
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US1261943A
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US1259275A
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US1380250A
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US1504367A
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US1658056A
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GB245232A
Cited
US1744810A
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US2108795A
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FR987343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |