US2549829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for servo actuators
Assignee: Schneider Electric Buildings Americas Inc
•
Filing: 1943-08-06
•
Granted: 1951-04-24
•
Expires: 1963-08-06
Abstract
No abstract record available.
Inventors
- 👤 Edgar D Lilja
- 👤 Donald L Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:34
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/121; G05D3/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2025749A
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US2040014A
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US2159142A
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US2263497A
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US2192022A
Cited
US2243456A
Cited
US2286778A
Cited
US2402210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |