US2628865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible sprinkler unit
Assignee: Individual
•
Filing: 1949-12-20
•
Granted: 1953-02-17
•
Expires: 1969-12-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas P Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:02
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/30; B05B1/3033; B05B1/3073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US960732A
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US1198886A
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US1571616A
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US1787975A
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US1758119A
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US1964097A
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US2000792A
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US2070665A
Cited
US2145451A
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US2320964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |