Patent US2792073A successfully refreshed from Google Patents.
US2792073A
Expired / Lapsed
US
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Air filter and oiler for pneumatic tools
Assignee: United States Steel Corp
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Filing: 1955-04-19
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Granted: 1957-05-14
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Expires: 1975-04-19
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Boss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:45
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/26; B25D17/265; E; E21; E21B; E21B49/00; E21B49/005; F; F16; F16N; F16N7/00; F16N7/30; F16N7/32; F16N7/34; Y; Y10; Y10S; Y10S55/00; Y10S55/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |