US1780160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1929-01-17
•
Granted: 1930-11-04
•
Expires: 1949-01-17
Abstract
No abstract record available.
Inventors
- 👤 Leach Robert William
- 👤 Bateman William Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:52
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/26; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4386; Y10T29/00; Y10T29/49; Y10T29/49405
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) | 1933-11-03 | 1934-05-05 | 1934-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-11-03 | 1938-05-05 | 1938-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-11-03 | 1942-05-05 | 1942-11-04 | $7700.00 | Window Closed / Lapsed |