Patent US6502758B2 successfully refreshed from Google Patents.
Patent US1837564A successfully refreshed from Google Patents.
US1837564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic control
Assignee: Pines Winterfront Co
•
Filing: 1929-11-23
•
Granted: 1931-12-22
•
Expires: 1949-11-23
Abstract
No abstract record available.
Inventors
- 👤 Albert G Mccaleb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:54
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/10; F01P7/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1934-12-21 | 1935-06-22 | 1935-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-12-21 | 1939-06-22 | 1939-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-12-21 | 1943-06-22 | 1943-12-22 | $7700.00 | Window Closed / Lapsed |