US2961149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillatory compressor
Assignee: Individual
•
Filing: 1957-05-14
•
Granted: 1960-11-22
•
Expires: 1977-05-14
Abstract
No abstract record available.
Inventors
- 👤 Robert R Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:43
CPC Classifications
F; F04; F04B; F04B35/00; F04B35/04; F04B35/045; F04B39/00; F04B39/10; F04B39/102; F04B45/00; F04B45/04; F04B45/045; F04B45/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1996160A
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US2076665A
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US2233082A
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US2261648A
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US2420929A
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US2410984A
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US2470925A
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US2598609A
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US2490505A
Cited
DE821000C
Cited
US2627811A
Cited
US2706795A
Cited
US2845080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |