US2840183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cooling and cleaning compressed air
Assignee: Individual
•
Filing: 1955-04-19
•
Granted: 1958-06-24
•
Expires: 1975-04-19
Abstract
No abstract record available.
Inventors
- 👤 Robert H George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:52
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B60; B60T; B60T17/00; B60T17/002; Y; Y10; Y10S; Y10S55/00; Y10S55/17; Y10T; Y10T137/00; Y10T137/794; Y10T137/8049
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1458005A
Cited
GB297510A
Cited
US2016541A
Cited
US2195565A
Cited
US2226045A
Cited
US2708035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |