Patent US2355434A successfully refreshed from Google Patents.
US2355434A
Expired / Lapsed
US
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Hydraulic operator
Assignee: TRABON ENGINEERING Corp
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Filing: 1941-04-04
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Granted: 1944-08-08
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Expires: 1961-04-04
Abstract
No abstract record available.
Inventors
- 👤 Robert L Harter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:44
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/08; F15B11/15; F15B13/00; F15B13/02; F15B13/04; F15B13/042; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/86606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-08-08 | 1948-02-07 | 1948-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-08 | 1952-02-07 | 1952-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-08 | 1956-02-07 | 1956-08-08 | $7700.00 | Window Closed / Lapsed |