US2923759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature controller
Assignee: Northrop Grumman Corp
•
Filing: 1955-01-10
•
Granted: 1960-02-02
•
Expires: 1975-01-10
Abstract
No abstract record available.
Inventors
- 👤 Kaye B Swan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:46
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1925; C; C08; C08F; C08F210/00; C08F210/04; C08F210/08; C08F210/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1310097A
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US1467843A
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US1543654A
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FR566624A
Cited
US2083611A
Cited
US2547882A
Cited
US2682173A
Cited
US2572582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |