Patent US1657066A successfully refreshed from Google Patents.
US2986764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction cleaner
Assignee: Hoover Co
•
Filing: 1958-08-08
•
Granted: 1961-06-06
•
Expires: 1978-08-08
Abstract
No abstract record available.
Inventors
- 👤 Don C Krammes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:07
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4083; A47L11/29; A47L11/30; A47L11/4002; A47L11/4008; A47L11/4011; A47L11/4013; A47L11/4016; A47L11/4036
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR596871A
Cited
US1687283A
Cited
US2200026A
Cited
US2531370A
Cited
US2635276A
Cited
US2607068A
Cited
US2607067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |