Patent US2394546A successfully refreshed from Google Patents.
Patent US2490965A successfully refreshed from Google Patents.
US2490965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic temperature control for warming blankets and the like
Assignee: Knapp Monarch Co
•
Filing: 1947-12-09
•
Granted: 1949-12-13
•
Expires: 1967-12-09
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Huck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:11
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1776901A
Cited
US1694264A
Cited
GB338880A
Cited
US1903015A
Cited
US2035035A
Cited
US2044147A
Cited
US2126398A
Cited
US2125110A
Cited
US2195958A
Cited
US2163297A
Cited
US2234184A
Cited
US2290091A
Cited
US2278633A
Cited
US2400735A
Cited
US2439842A
Cited
US2429475A
Cited
US2429453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |