US2975611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for air conditioning units
Assignee: General Electric Co
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Filing: 1959-08-31
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Granted: 1961-03-21
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Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Pietsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:53
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/02; F25D21/025; F24; F24F; F24F1/00; F24F1/02; F24F1/028; F24F1/0284; F24F1/03; F24F1/031
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |