US2608678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical controlling apparatus
Assignee: Evershed and Vignoles Ltd
•
Filing: 1949-03-14
•
Granted: 1952-08-26
•
Expires: 1969-03-14
Abstract
No abstract record available.
Inventors
- 👤 Marchment William Thomas
- 👤 Boundy James Reilly
- 👤 Bergen Stephen Archbold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:56
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/12; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2282726A
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US2300537A
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US2313079A
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US2390793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |