US914209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiator-valve.
Assignee: Individual
•
Filing: 1908-07-31
•
Granted: 1909-03-02
•
Expires: 1928-07-31
Abstract
No abstract record available.
Inventors
- 👤 Frank L Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:19
CPC Classifications
F; F16; F16K; F16K37/00; F16K37/0008; F16K37/0016; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T137/8309
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) | 1912-03-01 | 1912-08-31 | 1913-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-03-01 | 1916-08-31 | 1917-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-03-01 | 1920-08-31 | 1921-03-02 | $7700.00 | Window Closed / Lapsed |