US1880255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric water heater
Assignee: Individual
•
Filing: 1930-04-03
•
Granted: 1932-10-04
•
Expires: 1950-04-03
Abstract
No abstract record available.
Inventors
- 👤 Peter A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:55
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/185; F24H9/00; F24H9/12; F24H9/13; F24H9/133
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) | 1935-10-04 | 1936-04-04 | 1936-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-10-04 | 1940-04-04 | 1940-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-10-04 | 1944-04-04 | 1944-10-04 | $7700.00 | Window Closed / Lapsed |