US2498864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature regulation
Assignee: Individual
•
Filing: 1945-12-20
•
Granted: 1950-02-28
•
Expires: 1965-12-20
Abstract
No abstract record available.
Inventors
- 👤 John J Root
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:05
CPC Classifications
F; F25; F25D; F25D29/00; G; G05; G05D; G05D23/00; G05D23/19; G05D23/30; F25B; F25B2600/00; F25B2600/02; F25B2600/025; F25B2600/0251; F25B49/00; F25B49/02; F25B49/025; F25D2700/00; F25D2700/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US423965A
Cited
US2052769A
Cited
US2086843A
Cited
US2046578A
Cited
US2060774A
Cited
US2129477A
Cited
GB541830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |