US2780715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion heater
Assignee: GLO QUARTZ ELECTRIC HEATER CO
•
Filing: 1955-08-02
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Granted: 1957-02-05
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Expires: 1975-08-02
Abstract
No abstract record available.
Inventors
- 👤 George T Strokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:43
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/78; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; H01F41/0213; H01M; H01M10/00; H01M10/42; H01M10/44; H02; H02J; H02J7/00; H02J7/34; H02J7/35; H05B3/02; H05B3/06; H10; H10P; H10P14/00; H10P14/40; H10P14/46; H10P14/47; H10P95/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/547; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |