US2522075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking mechanism for the hose connecting member for suction cleaners
Assignee: Van Der Heem BV
•
Filing: 1948-01-12
•
Granted: 1950-09-12
•
Expires: 1968-01-12
Abstract
No abstract record available.
Inventors
- 👤 Heem Jan Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:55
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/24; A47L9/242; F; F16; F16L; F16L37/00; F16L37/08; F16L37/084
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1484528A
Cited
US1974476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |