US2936121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic valve for automatic heating or cooling regulation
Assignee: Landis and Gyr AG
•
Filing: 1958-01-21
•
Granted: 1960-05-10
•
Expires: 1978-01-21
Abstract
No abstract record available.
Inventors
- 👤 Buchel Werner
- 👤 Peter R Grunberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:53
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/185; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/1963; Y10T137/1987; Y10T137/7287; Y10T137/7339; Y10T137/7355
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2207978A
Cited
US2583006A
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US2419820A
Cited
US2599175A
Cited
US2631781A
Cited
US2776796A
Cited
US2835446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |