Patent US2312677A successfully refreshed from Google Patents.
US2312677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric fluid heating means
Assignee: ELMER T TURNER
•
Filing: 1941-08-28
•
Granted: 1943-03-02
•
Expires: 1961-08-28
Abstract
No abstract record available.
Inventors
- 👤 Frank D Shrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:56
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/21; A47J27/21008; A47J27/21016; A47J27/21025
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) | 1946-03-01 | 1946-08-31 | 1947-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-01 | 1950-08-31 | 1951-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-01 | 1954-08-31 | 1955-03-02 | $7700.00 | Window Closed / Lapsed |