US2957154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance heating unit
Assignee: GLO QUARTZ ELECTRIC HEATER CO
•
Filing: 1958-06-16
•
Granted: 1960-10-18
•
Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 George T Strokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:44
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2511807A
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US638236A
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US1717284A
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US2047796A
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US2372212A
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US2672540A
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US2772336A
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US2796502A
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US2831950A
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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) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |