US2501912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprinkler
Assignee: DORYTH F PARKER
•
Filing: 1945-07-03
•
Granted: 1950-03-28
•
Expires: 1965-07-03
Abstract
No abstract record available.
Inventors
- 👤 Hugh B Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:11
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/04; B05B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US454288A
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US461726A
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US564610A
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US769278A
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US957569A
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US978538A
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US1164128A
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US1412055A
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US1571950A
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US1668582A
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US1997874A
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US1932563A
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US1976030A
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US2045336A
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US2040165A
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US2202349A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |