US2885223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescopic tube coupling with step adjustment means
Assignee: Hoover Co
•
Filing: 1956-10-08
•
Granted: 1959-05-05
•
Expires: 1976-10-08
Abstract
No abstract record available.
Inventors
- 👤 Jack E Duff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:23
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/24; A47L9/242; A47L9/244; F; F16; F16L; F16L27/00; F16L27/12; F16L27/127; F16L27/1273
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US219098A
Cited
US319350A
Cited
US573695A
Cited
US793869A
Cited
US825810A
Cited
US1691851A
Cited
FR918411A
Cited
US2667371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |