US3223808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precalibrated thermostatic switches
Assignee: Portage Electric Products Inc
•
Filing: 1963-09-25
•
Granted: 1965-12-14
•
Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 Glenn E Wehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:16
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1368412A
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US1901775A
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US2497397A
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US2627003A
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US2675445A
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US3021405A
Cited
US3012122A
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US3148258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |