US2851566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic float switch
Assignee: ROYAL JET Inc
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Filing: 1955-11-21
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Granted: 1958-09-09
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Expires: 1975-11-21
Abstract
No abstract record available.
Inventors
- 👤 Norman E Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:52
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/32; G01F23/38; H; H01; H01H; H01H35/00; H01H35/24; H01H35/40; H01H35/405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |