US1211973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heater.
Assignee: ELECTRO-FUME Co
•
Filing: 1916-06-09
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Granted: 1917-01-09
•
Expires: 1936-06-09
Abstract
No abstract record available.
Inventors
- 👤 Vern Slater
- 👤 Leonidas D West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:31
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/04; A45D20/08; A45D20/10; A45D20/12
Claims Analysis
Total Claims: 0
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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) | 1920-01-09 | 1920-07-10 | 1921-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-01-09 | 1924-07-10 | 1925-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-01-09 | 1928-07-10 | 1929-01-09 | $7700.00 | Window Closed / Lapsed |