US2528030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heater
Assignee: Edwin L Wiegand Co
•
Filing: 1949-08-10
•
Granted: 1950-10-31
•
Expires: 1969-08-10
Abstract
No abstract record available.
Inventors
- 👤 Jules J Burgun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:16
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/21; A47J27/21008; A47J27/21016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1382101A
Cited
US1029230A
Cited
US1060266A
Cited
US2034486A
Cited
US2306913A
Cited
US2266480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |