Patent US2253979A successfully refreshed from Google Patents.
US2253979A
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US
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Sprinkler head
Assignee: KATHERINE DE LACY MULHALL
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Filing: 1938-04-19
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Granted: 1941-08-26
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Expires: 1958-04-19
Abstract
No abstract record available.
Inventors
- 👤 Lacy-Wulhall Patrick De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:12
CPC Classifications
B; B05; B05B; B05B15/00; B05B15/70; B05B15/72; B05B15/74; B05B3/00; B05B3/02; B05B3/04; B05B3/0417; B05B3/0446; B05B3/0453
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-08-25 | 1945-02-24 | 1945-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-25 | 1949-02-24 | 1949-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-25 | 1953-02-24 | 1953-08-26 | $7700.00 | Window Closed / Lapsed |