Patent US2089873A successfully refreshed from Google Patents.
US2089873A
Expired / Lapsed
US
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Controlling device
Assignee: Elster American Meter Co LLC
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Filing: 1932-07-08
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Granted: 1937-08-10
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Expires: 1952-07-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:44
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/18; G05D16/185; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7769; Y10T137/777; Y10T137/8593; Y10T137/87917; Y10T137/88022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-08-09 | 1941-02-08 | 1941-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-08-09 | 1945-02-08 | 1945-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-08-09 | 1949-02-08 | 1949-08-10 | $7700.00 | Window Closed / Lapsed |