Patent US2961526A successfully refreshed from Google Patents.
US2961526A
Expired / Lapsed
US
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Electric heating appliance
Assignee: Nortel Networks Ltd
•
Filing: 1958-01-21
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Granted: 1960-11-22
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Expires: 1978-01-21
Abstract
No abstract record available.
Inventors
- 👤 Carrel H Dykes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:03
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/002; H05B2203/003; H05B2203/014; H05B2203/017
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE529560C
Cited
US2203918A
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US2284673A
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US2393182A
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US2433476A
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US2490417A
Cited
US2518147A
Cited
US2579383A
Cited
US2708234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |