US2520855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure operator
Assignee: Schneider Electric Buildings Americas Inc
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Filing: 1946-09-28
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Granted: 1950-08-29
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Expires: 1966-09-28
Abstract
No abstract record available.
Inventors
- 👤 Edmund A Rehwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:01
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/681; E05F15/684; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/644; E05Y2201/646; E05Y2800/00; E05Y2900/00; E05Y2900/10; E05Y2900/106; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/974; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18152; Y10T74/18568; Y10T74/18832; Y10T74/1884
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) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |