Patent US2830162A successfully refreshed from Google Patents.
US2830162A
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Heating method and apparatus
Assignee: Raytheon Co
•
Filing: 1954-06-22
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Granted: 1958-04-08
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Expires: 1974-06-22
Abstract
No abstract record available.
Inventors
- 👤 David A Copson
- 👤 Jr Luther Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:31
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; H; H05; H05B; H05B6/00; H05B6/64; B65D2581/00; B65D2581/34; B65D2581/3437; B65D2581/3439; B65D2581/3447; B65D2581/3471; B65D2581/3477; B65D2581/3486; B65D2581/3494
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |