US2536790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planter valve
Assignee: Individual
•
Filing: 1945-05-24
•
Granted: 1951-01-02
•
Expires: 1965-05-24
Abstract
No abstract record available.
Inventors
- 👤 Weishaar Emrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:49
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/18; A01C7/08; A01C7/081; A01C7/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1306153A
Cited
US665708A
Cited
US811977A
Cited
US802066A
Cited
US1328730A
Cited
US1089590A
Cited
US1252923A
Cited
US1948559A
Cited
US2381505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |