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Patent US3420499A successfully refreshed from Google Patents.
US3420499A
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Assignee: Nibco Inc
•
Filing: 1966-02-28
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Granted: 1969-01-07
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Expires: 1986-02-28
Abstract
No abstract record available.
Inventors
- 👤 Donald L Pletcher
- 👤 John D Stalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:45
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/28; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6161; Y10T137/6164; Y10T137/6167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2401112A
Cited
US2653791A
Cited
US2868499A
Cited
US2983477A
Cited
US2893687A
Cited
US2914258A
Cited
US3217735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |