Patent US3517881A successfully refreshed from Google Patents.
US3517881A
Expired / Lapsed
US
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Temperature controller
Assignee: Schneider Electric Buildings Americas Inc
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Filing: 1968-01-19
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Granted: 1970-06-30
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Expires: 1988-01-19
Abstract
No abstract record available.
Inventors
- 👤 Orin J Kohlbeck
- 👤 Russell P Sweger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:39
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/27536; G05D23/27537
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1704141A
Cited
US1736984A
Cited
US2221347A
Cited
US2622923A
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US2884198A
Cited
US3252227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |