US3496336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heater
Assignee: Texas Instruments Inc
•
Filing: 1967-10-25
•
Granted: 1970-02-17
•
Expires: 1987-10-25
Abstract
No abstract record available.
Inventors
- 👤 Ashok R Hingorany
- 👤 Joseph A Willoughby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:20
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/26; H05B3/267; H05B3/68; H05B3/74; H05B3/748
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1521241A
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US2463260A
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US2745942A
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US3060300A
Cited
US3043943A
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US3136680A
Cited
US3266661A
Cited
US3231718A
Cited
US3215574A
Cited
US3265865A
Cited
US3401369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |