US1809899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically operated water heater
Assignee: Individual
•
Filing: 1929-07-03
•
Granted: 1931-06-16
•
Expires: 1949-07-03
Abstract
No abstract record available.
Inventors
- 👤 Heroy Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:57
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/54; A47J31/56; F; F24; F24H; F24H1/00; F24H1/10; F24H1/101; F24H1/102
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) | 1934-06-15 | 1934-12-15 | 1935-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-06-15 | 1938-12-15 | 1939-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-06-15 | 1942-12-15 | 1943-06-16 | $7700.00 | Window Closed / Lapsed |