US1478320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for feed-water supply to steam generators and the like
Assignee: Individual
•
Filing: 1923-04-07
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Granted: 1923-12-18
•
Expires: 1943-04-07
Abstract
No abstract record available.
Inventors
- 👤 Baxter Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:16
CPC Classifications
F; F22; F22D; F22D11/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7785; Y10T137/7787; Y10T137/7788; Y10T137/7832; Y10T137/7835
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) | 1926-12-17 | 1927-06-18 | 1927-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-12-17 | 1931-06-18 | 1931-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-12-17 | 1935-06-18 | 1935-12-18 | $7700.00 | Window Closed / Lapsed |