US3129723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot and cold water control system
Assignee: Individual
•
Filing: 1961-11-02
•
Granted: 1964-04-21
•
Expires: 1981-11-02
Abstract
No abstract record available.
Inventors
- 👤 Charles E Straka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:40
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1103756A
Cited
US2146930A
Cited
US2402280A
Cited
DE868877C
Cited
US2790632A
Cited
DE1104450B
Cited
US2908017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |