US2629536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling device for engine driven compressor units
Assignee: Ingersoll Rand Co
•
Filing: 1948-11-12
•
Granted: 1953-02-24
•
Expires: 1968-11-12
Abstract
No abstract record available.
Inventors
- 👤 Charles S Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:33
CPC Classifications
F; F02; F02D; F02D29/00; F02D29/04; F04; F04B; F04B49/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2546613A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |