US2577902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control bulb for thermal expansion valves
Assignee: Carrier Corp
•
Filing: 1947-02-24
•
Granted: 1951-12-11
•
Expires: 1967-02-24
Abstract
No abstract record available.
Inventors
- 👤 William L Mcgrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:36
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/31; F25B41/33; F25B41/335
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1971695A
Cited
US2147678A
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US2192117A
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US2133963A
Cited
US2242334A
Cited
US2199498A
Cited
US2319993A
Cited
US2475556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |