Patent US3035599A successfully refreshed from Google Patents.
US3035599A
Expired / Lapsed
US
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Valve purging
Assignee: Ingersoll Rand Co
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Filing: 1959-04-13
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Granted: 1962-05-22
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Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Isidore R Loss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:29
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F16; F16K; F16K25/00; F16K25/02; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4259; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2603232A
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US870487A
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US920779A
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US1102316A
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US1235409A
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DE354818C
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US2378607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |