Patent US2866415A successfully refreshed from Google Patents.
US2866415A
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Hydraulic transformers
Assignee: Individual
•
Filing: 1954-07-13
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Granted: 1958-12-30
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Expires: 1974-07-13
Abstract
No abstract record available.
Inventors
- 👤 Bratt John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:05
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/117; F01; F01L; F01L25/00; F01L25/02; F01L25/04; F01L25/06; F01L25/063; F04B19/00; F04B19/02; F04B19/022; F04B9/1176; F15; F15B; F15B3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US825950A
Cited
US2141731A
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US2186968A
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US2528131A
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US2579670A
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US2660955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |