Patent US999220A successfully refreshed from Google Patents.
US999220A
Expired / Lapsed
US
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Air or gas compressor.
Assignee: Individual
•
Filing: 1910-06-20
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Granted: 1911-08-01
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Expires: 1930-06-20
Abstract
No abstract record available.
Inventors
- 👤 Christopher C Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:20
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/04; Y; Y10; Y10T; Y10T137/00; Y10T137/6198; Y10T137/6253; Y10T137/6307; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7842; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18248; Y10T74/18256
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) | 1914-07-31 | 1915-01-30 | 1915-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-07-31 | 1919-01-30 | 1919-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-07-31 | 1923-01-30 | 1923-08-01 | $7700.00 | Window Closed / Lapsed |