US3286446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiuse canister type vacuum cleaner
Assignee: Singer Co
•
Filing: 1963-08-27
•
Granted: 1966-11-22
•
Expires: 1983-08-27
Abstract
No abstract record available.
Inventors
- 👤 Happe Reynold
- 👤 Louis F Daman
- 👤 Russell S Newhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:58
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/0095
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2734594A
Cited
US1206615A
Cited
US1144931A
Cited
US1099560A
Cited
US2177588A
Cited
US2295984A
Cited
US2380382A
Cited
DE949428C
Cited
US2419490A
Cited
US2595752A
Cited
US2652902A
Cited
US2707527A
Cited
GB729807A
Cited
US2779432A
Cited
US2778447A
Cited
US2847352A
Cited
US2776726A
Cited
US2917769A
Cited
US2892511A
Cited
US3111191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |