US3060303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating element
Assignee: Individual
•
Filing: 1958-07-29
•
Granted: 1962-10-23
•
Expires: 1978-07-29
Abstract
No abstract record available.
Inventors
- 👤 George A Skoglund
- 👤 Richard D Wingate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:03
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; H05B3/20; H05B3/34; H05B3/342; H05B3/565; H05B2203/00; H05B2203/011; H05B2203/013; H05B2203/017
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1989282A
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US2255376A
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US2274840A
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US2386095A
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US2406367A
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US2559077A
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US2503457A
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US2473183A
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US2721154A
Cited
US2669646A
Cited
US2679569A
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US2683673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |