US2798503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak-responsive automatic cut-off valve actuator for water heaters or the like
Assignee: Individual
•
Filing: 1953-09-21
•
Granted: 1957-07-09
•
Expires: 1973-09-21
Abstract
No abstract record available.
Inventors
- 👤 Carver Aubrey
- 👤 Benjamin H Butier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:21
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2007; F24H9/16; F24H9/17; Y; Y10; Y10T; Y10T137/00; Y10T137/1624
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US852819A
Cited
US1253986A
Cited
US1924356A
Cited
US1993666A
Cited
US2074554A
Cited
US2347203A
Cited
US2625166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |