Patent US2986765A successfully refreshed from Google Patents.
US2986765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction cleaner
Assignee: —
•
Filing: —
•
Granted: 1961-06-06
•
Expires: 1978-06-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:13
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/24; A47L9/00; A47L9/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1156235A
Cited
FR711039A
Cited
FR882711A
Cited
US2419490A
Cited
US2500832A
Cited
CH246238A
Cited
US2507672A
Cited
US2632524A
Cited
US2534578A
Cited
US2729303A
Cited
US2699838A
Cited
US2758669A
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 |