US2987257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic devices
Assignee: —
•
Filing: —
•
Granted: 1961-06-06
•
Expires: 1978-06-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:24
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125; G05D23/126; G05D23/127; F; F16; F16K; F16K5/00; F16K5/02; F23; F23N; F23N1/00; F23N1/007; F23K; F23K2900/00; F23K2900/05001; F23N2235/00; F23N2235/12; F23N2235/16; F23N2235/24; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87917; Y10T137/87981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2099171A
Cited
US2696082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |