US2721764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprinkler apparatus
Assignee: PLASTIC IRRIGATION PRODUCTS CO
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Filing: 1954-08-09
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Granted: 1955-10-25
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Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Roy C Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:19
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/30; B05B1/3026; B05B1/26; B05B1/262; B05B1/267; B05B15/00; B05B15/60; B05B15/65; B05B15/658
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |