US2638117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system having a manual transfer valve
Assignee: Honeywell Inc
•
Filing: 1947-09-11
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Granted: 1953-05-12
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Expires: 1967-09-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:13
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/44; G05B11/48; G05B11/50; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0396; Y10T137/2278; Y10T137/794; Y10T137/8049; Y10T137/8158; Y10T137/8326; Y10T137/8593; Y10T137/86493; Y10T137/86501; Y10T137/86718; Y10T137/86726; Y10T137/877; Y10T137/87788; Y10T137/8782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920827A
Cited
US2202286A
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GB458823A
Cited
US2311853A
Cited
US2268469A
Cited
US2476104A
Cited
US2369887A
Cited
US2423394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |