US2927606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism
Assignee: Robertshaw US Holding Corp
•
Filing: 1954-11-29
•
Granted: 1960-03-08
•
Expires: 1974-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel J Matchett
- 👤 Estel C Raney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:43
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2554; Y10T137/8593; Y10T137/86493; Y10T137/86879; Y10T137/86895; Y10T137/87265; Y10T137/87507
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US322388A
Cited
US2511779A
Cited
US2396984A
Cited
US2474304A
Cited
US2638123A
Cited
US2672016A
Cited
US2525560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |