US3052228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar hot water heater having an automatic water supply valve
Assignee: Individual
•
Filing: 1960-10-31
•
Granted: 1962-09-04
•
Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Okuda Yoshimatsn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K21/18; F24; F24S; F24S60/00; F24S60/30; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |