US2962748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine driven sweeper attachments for vacuum cleaners
Assignee: Preco LLC
•
Filing: 1957-07-05
•
Granted: 1960-12-06
•
Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
- 👤 Gerald M Magarian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:32
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0405; A47L9/0416; A47L9/0427; A47L9/0444; A47L9/0455; F; F01; F01D; F01D15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1309093A
Cited
US1145516A
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US1788992A
Cited
US1999696A
Cited
US2168899A
Cited
US2287922A
Cited
US2345623A
Cited
US2754161A
Cited
US2730750A
Cited
US2800759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |