US3361364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crop-guard for agricultural irrigation sprinklers
Assignee: J B KNIGHT CO Inc
•
Filing: 1965-07-14
•
Granted: 1968-01-02
•
Expires: 1985-07-14
Abstract
No abstract record available.
Inventors
- 👤 Rufus J Purtell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:36
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US998126A
Cited
US1075053A
Cited
US2417222A
Cited
US2535766A
Cited
US2757045A
Cited
US2973148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |