US3397302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible sheet-like electric heater
Assignee: Individual
•
Filing: 1965-12-06
•
Granted: 1968-08-13
•
Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Harry W Hosford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:49
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B3/146; B; B64; B64D; B64D15/00; B64D15/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2274839A
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US2340097A
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US2559077A
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US2473183A
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US3268846A
Cited
US3221145A
Cited
US3277419A
Cited
US3287684A
Cited
US3281579A
Cited
US3311862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |