US3547150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoist control valve
Assignee: Ingersoll Rand Co
•
Filing: 1969-04-10
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Granted: 1970-12-15
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Expires: 1989-04-10
Abstract
No abstract record available.
Inventors
- 👤 Robert E Geiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:20
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; B; B66; B66D; B66D1/00; B66D1/02; B66D1/08; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0133; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7837; Y10T137/7838; Y10T137/7842; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/87265; Y10T137/87499
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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |