US814975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic balanced valve.
Assignee: Individual
•
Filing: 1903-05-25
•
Granted: 1906-03-13
•
Expires: 1923-05-25
Abstract
No abstract record available.
Inventors
- 👤 Frederic H Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:46
CPC Classifications
B; B67; B67D; B67D1/00; B67D1/08; B67D1/12; B67D1/14; B67D1/1405; B67D1/145; B67D1/1455; B67D1/1461; F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07
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) | 1909-03-12 | 1909-09-11 | 1910-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-03-12 | 1913-09-11 | 1914-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-03-12 | 1917-09-11 | 1918-03-13 | $7700.00 | Window Closed / Lapsed |