US2816570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manostat
Assignee: NORDEN KETAY CORP
•
Filing: 1953-02-02
•
Granted: 1957-12-17
•
Expires: 1973-02-02
Abstract
No abstract record available.
Inventors
- 👤 William C Coulbourn
- 👤 Herbert J Sandberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:11
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/2013; G05D16/202; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7761
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2251149A
Cited
FR781793A
Cited
US2118842A
Cited
US2112682A
Cited
US2299529A
Cited
US2219147A
Cited
US2597892A
Cited
US2688253A
Cited
US2694927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |