US2901183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-retracting nozzle unit for subsurface water sprinkler systems
Assignee: Individual
•
Filing: 1957-12-23
•
Granted: 1959-08-25
•
Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 Gerald C Kohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:47
CPC Classifications
B; B05; B05B; B05B15/00; B05B15/70; B05B15/72; B05B15/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US409796A
Cited
US1800858A
Cited
US2517457A
Cited
US2510249A
Cited
US2628909A
Cited
US2554894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |