US2947285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual and automatic hydraulic servomechanism
Assignee: Bell Aerospace Corp
•
Filing: 1957-03-20
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Granted: 1960-08-02
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Expires: 1977-03-20
Abstract
No abstract record available.
Inventors
- 👤 George T Baltus
- 👤 Beauchemin William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:22
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; B; B64; B64C; B64C13/00; B64C13/24; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/8659; Y10T137/86598
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2069540A
Cited
US2678177A
Cited
US2755624A
Cited
US2773660A
Cited
US2738772A
Cited
US2802456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |