US2844352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic valve
Assignee: Dole Valve Co
•
Filing: 1954-12-31
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Granted: 1958-07-22
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Expires: 1974-12-31
Abstract
No abstract record available.
Inventors
- 👤 Robert R Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:53
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/20; F16K11/24; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/87716; Y10T137/87764; Y10T137/87772; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US316588A
Cited
US2025368A
Cited
US1999599A
Cited
US2675204A
Cited
US2589682A
Cited
US2712324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |