US1374230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature-controller
Assignee: Individual
•
Filing: 1920-07-17
•
Granted: 1921-04-12
•
Expires: 1940-07-17
Abstract
No abstract record available.
Inventors
- 👤 Fred J Petrovics
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:17
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1924-04-11 | 1924-10-11 | 1925-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-04-11 | 1928-10-11 | 1929-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-04-11 | 1932-10-11 | 1933-04-12 | $7700.00 | Window Closed / Lapsed |