US2661076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-moisture separator
Assignee: Boeing Co
•
Filing: 1951-09-11
•
Granted: 1953-12-01
•
Expires: 1971-09-11
Abstract
No abstract record available.
Inventors
- 👤 Robert E Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/06; Y; Y10; Y10S; Y10S55/00; Y10S55/25
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US710626A
Cited
GB115546A
Cited
US1530825A
Cited
US1909227A
Cited
GB456468A
Cited
US2209661A
Cited
US2322110A
Cited
US2634820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |