US3090181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner
Assignee: Whirlpool Corp
•
Filing: 1960-06-02
•
Granted: 1963-05-21
•
Expires: 1980-06-02
Abstract
No abstract record available.
Inventors
- 👤 Melvin H Korrell
- 👤 Crehore Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:00
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/12; A47L9/122; A47L9/1427; A47L9/1481; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A VACUUM CLEANER ADAPTED TO EMPLOY AIR FILTERS EACH HAVING A FILTER PORTION AND A STIFF RIM SURROUNDING AN INTAKE OPENING, COMPRISING: A CASING HAVING AN INLET OPENING; MEANS FOR CREATING A VACUUM IN SAID CASING; BAG RETAINING MEANS ADJACENT SAID INLET OPENING; MOVABLE RESILIENT BAG SEALING MEANS ADJACENT SAID INLET OPEINING, THE RETAINING AND SEALING MEANS COOPERATING TO GRASP
Claim 2
Dependent Claim
60 words
A VACUUM CLEANER ADAPTED TO EMPLOY AIR FILTERS EACH HAVING A FILTER PORTION AND A STIFF RIM SURROUNDING AN INTAKE OPENING, COMPRISING: A CASING HAVING AN INLET OPENING; MEANS FOR CREATING A VACUUM IN SAID CASING; BAG RETAINING MEANS ADJACENT SAID INLET OPENING; MOVABLE RESILIENT BAG SEALING MEANS ADJACENT SAID INLET OPEINING, THE RETAINING AND SEALING MEANS COOPERATING TO GRASP
References Cited (Backward Citations)
US2074136A
Cited
US2096139A
Cited
US2201675A
Cited
US2729303A
Cited
US2722993A
Cited
US2758667A
Cited
US2771152A
Cited
US2766844A
Cited
US2758669A
Cited
US2870863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |