US2619037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for hydraulic apparatus
Assignee: Lummus Technology LLC
•
Filing: 1950-12-05
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Granted: 1952-11-25
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Expires: 1970-12-05
Abstract
No abstract record available.
Inventors
- 👤 Ward J F O'connor
- 👤 Jr Frank A Rowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:20
CPC Classifications
F; F15; F15B; F15B21/00; C; C10; C10B; C10B41/00; C10B41/02; C10B41/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85954; Y10T137/86493; Y10T137/86501; Y10T137/877; Y10T137/87708; Y10T137/87764
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2212833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |