US2801055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating system control and thermostatically controlled switch therefor
Assignee: Individual
•
Filing: 1954-06-28
•
Granted: 1957-07-30
•
Expires: 1974-06-28
Abstract
No abstract record available.
Inventors
- 👤 Seifert Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:32
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/2754; F; F24; F24H; F24H9/00; F24H9/20; F24H9/2064; F24H9/2085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1951663A
Cited
US2139615A
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US2073676A
Cited
US2312353A
Cited
US2271813A
Cited
US2322405A
Cited
US2593812A
Cited
US2641668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |