US2010525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device for pump impellers
Assignee: Ingersoll Rand Co
•
Filing: 1934-02-26
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Granted: 1935-08-06
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Expires: 1954-02-26
Abstract
No abstract record available.
Inventors
- 👤 Anthony L Mchugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:31
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/20; F16; F16D; F16D1/00; F16D1/06; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53678; Y10T403/00; Y10T403/29; Y10T403/295; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20738; Y10T74/20882
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) | 1938-08-05 | 1939-02-04 | 1939-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-08-05 | 1943-02-04 | 1943-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-08-05 | 1947-02-04 | 1947-08-06 | $7700.00 | Window Closed / Lapsed |