Patent US2963270A successfully refreshed from Google Patents.
US2963270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine mechanism, more particularly for air flow operation for vacuum cleaning
Assignee: Preco LLC
•
Filing: 1956-09-17
•
Granted: 1960-12-06
•
Expires: 1976-09-17
Abstract
No abstract record available.
Inventors
- 👤 Gerald M Magarian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:44
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US137865A
Cited
GB190626130A
Cited
US962364A
Cited
GB191205303A
Cited
US1460245A
Cited
US1461620A
Cited
US1671054A
Cited
US2205902A
Cited
GB564918A
Cited
US2382839A
Cited
US2400434A
Cited
US2537523A
Cited
DE808796C
Cited
US2667842A
Cited
US2683276A
Cited
US2812155A
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 |