US3413440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal responsive assembly, particularly for electric heaters
Assignee: Edwin L Wiegand Co
•
Filing: 1965-08-23
•
Granted: 1968-11-26
•
Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Lester D Drugmand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:45
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208; H05B3/00; H05B3/78; H05B3/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA611391A
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US1734609A
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US2432169A
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US2563858A
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GB805440A
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US3082313A
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US2977454A
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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) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |