US2556981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap acting control switch
Assignee: Robertshaw US Holding Corp
•
Filing: 1948-08-03
•
Granted: 1951-06-12
•
Expires: 1968-08-03
Abstract
No abstract record available.
Inventors
- 👤 Estel C Raney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:04
CPC Classifications
H; H01; H01H; H01H5/00; H01H5/04; H01H5/18; F; F16; F16H; F16H35/00; F16H35/14; H01H13/00; H01H13/02; H01H13/26; H01H13/36; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/18896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1954391A
Cited
US2135864A
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US2228523A
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GB551021A
Cited
US2330506A
Cited
US2368679A
Cited
US2417652A
Cited
US2429069A
Cited
US2425159A
Cited
US2439747A
Cited
US2454185A
Cited
US2414778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |