US2750472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic thermostat devices
Assignee: ELSA L STRANGE
•
Filing: 1953-03-20
•
Granted: 1956-06-12
•
Expires: 1973-03-20
Abstract
No abstract record available.
Inventors
- 👤 Charles H Strange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:25
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/46; H01H37/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US924499A
Cited
US1443601A
Cited
DE490158C
Cited
US2339087A
Cited
US2313083A
Cited
US2313072A
Cited
US2320535A
Cited
US2417341A
Cited
US2538387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |