Patent US3061176A successfully refreshed from Google Patents.
US3061176A
Expired / Lapsed
US
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Unloader means for a reciprocating compressor
Assignee: Worthington Corp
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Filing: 1959-05-25
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Granted: 1962-10-30
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Expires: 1979-05-25
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Nicholas
- 👤 David N Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:47
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/22; F04B49/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2191162A
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US2235251A
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US2555005A
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US2673025A
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US2691388A
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US2763425A
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US2973133A
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US2973132A
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US2971690A
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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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |