US3494551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace control system
Assignee: Therm O Disc Inc
•
Filing: 1967-11-20
•
Granted: 1970-02-10
•
Expires: 1987-11-20
Abstract
No abstract record available.
Inventors
- 👤 Harold F Snider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:34
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2064; F24H9/2085; F24H15/00; F24H15/10; F24H15/128; F24H15/156; F24H15/20; F24H15/235; F24H15/25; F24H15/254; F24H15/30; F24H15/345; F24H15/355; F24H15/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2688064A
Cited
US2640313A
Cited
US1724804A
Cited
US1781287A
Cited
US1925530A
Cited
US2045289A
Cited
US2209610A
Cited
US2127592A
Cited
US2499523A
Cited
US2767922A
Cited
US2822985A
Cited
US3284600A
Cited
US3354280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |