US2757686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction flow device
Assignee: Individual
•
Filing: 1954-07-30
•
Granted: 1956-08-07
•
Expires: 1974-07-30
Abstract
No abstract record available.
Inventors
- 👤 John M Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 22:49
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/007; A; A01; A01M; A01M7/00; A01M7/0089; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187; Y10T137/86212; Y10T137/86348; Y10T137/86364
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) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |