US2671834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level controlled switch mechanism
Assignee: McDonnell and Miller Inc
•
Filing: 1952-01-23
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Granted: 1954-03-09
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Expires: 1972-01-23
Abstract
No abstract record available.
Inventors
- 👤 Leopold J Kmiecik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:15
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; H; H01; H01H; H01H36/00; H01H36/02; Y; Y10; Y10S; Y10S73/00; Y10S73/05; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18928
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) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |