Patent US883928A successfully refreshed from Google Patents.
US883928A
Expired / Lapsed
US
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Valve for air-compressors.
Assignee: General Electric Co
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Filing: 1900-10-29
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Granted: 1908-04-07
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Expires: 1920-10-29
Abstract
No abstract record available.
Inventors
- 👤 Asa F Batchelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:50
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/32; F16; F16K; F16K15/00; F16K15/02; F16K15/06; Y; Y10; Y10T; Y10T137/00; Y10T137/6198; Y10T137/6253; Y10T137/6307; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7938
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) | 1911-04-07 | 1911-10-07 | 1912-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-04-07 | 1915-10-07 | 1916-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-04-07 | 1919-10-07 | 1920-04-07 | $7700.00 | Window Closed / Lapsed |