US2899216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner hose coupling having a
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
•
Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/24; A47L9/242; Y; Y10; Y10S; Y10S285/00; Y10S285/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US873300A
Cited
GB353520A
Cited
US2146252A
Cited
US2135380A
Cited
US2254611A
Cited
US2461024A
Cited
GB595935A
Cited
US2518426A
Cited
US2516883A
Cited
US2581837A
Cited
US2633603A
Cited
US2702199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |