US3028878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: ANCHOR/DARLING VALVE COMPANY 919 CONESTOGA RD ROSEMONT PA 19010 A CORP OF
•
Filing: 1957-09-12
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Granted: 1962-04-10
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Expires: 1977-09-12
Abstract
No abstract record available.
Inventors
- 👤 Paul J Natho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:20
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/126; F16K11/00; F16K11/10; F16K11/14; F16K11/16; F16K11/161; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/87764
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US564249A
Cited
US1036451A
Cited
US1396501A
Cited
US2141018A
Cited
US2479454A
Cited
US2633868A
Cited
US2700983A
Cited
US2783020A
Cited
US2845085A
Cited
US2897836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |