US2905196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain valve assembly for lawn sprinkler systems
Assignee: Individual
•
Filing: 1956-10-08
•
Granted: 1959-09-22
•
Expires: 1976-10-08
Abstract
No abstract record available.
Inventors
- 👤 Norman L Van Wagenen
- 👤 Lamph Ara Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:30
CPC Classifications
B; B05; B05B; B05B15/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1675992A
Cited
US1462256A
Cited
US1428553A
Cited
US1350138A
Cited
US1342051A
Cited
US1815395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |