US3420146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lowering valve
Assignee: Eaton Corp
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Filing: 1966-10-28
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Granted: 1969-01-07
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Expires: 1986-10-28
Abstract
No abstract record available.
Inventors
- 👤 John C Mcpherson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:10
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/20; B66F9/22; F; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F15B11/0413; F15B11/044; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; G05D7/0133; G05D7/014; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/42; F15B2211/428; F15B2211/46; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7052; F15B2211/75; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7809
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |