Patent US986122A successfully refreshed from Google Patents.
US986122A
Expired / Lapsed
US
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Valve mechanism for air-compressors.
Assignee: Individual
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Filing: —
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Granted: 1911-03-07
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Expires: 1928-03-07
Abstract
No abstract record available.
Inventors
- 👤 John Astrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:14
CPC Classifications
A; A47; A47K; A47K5/00; A47K5/06; A47K5/12; A47K5/1202; A47K5/1204; F; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K15/066; F16K17/00; F16K17/18; F16K17/19; F16K17/196; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7841; Y10T137/7859; Y10T137/7861; Y10T137/7862; Y10T137/7863; Y10T137/7864
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1914-03-06 | 1914-09-05 | 1915-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-03-06 | 1918-09-05 | 1919-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-03-06 | 1922-09-05 | 1923-03-07 | $7700.00 | Window Closed / Lapsed |