Patent US2956312A successfully refreshed from Google Patents.
Patent US3297233A successfully refreshed from Google Patents.
US3297233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner bag with closed tube
Assignee: Equitable Paper Bag Co Inc
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Filing: 1965-06-10
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Granted: 1967-01-10
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Expires: 1985-06-10
Abstract
No abstract record available.
Inventors
- 👤 Carl E Meyerhoefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:05
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; Y; Y10; Y10S; Y10S383/00; Y10S383/904; Y10S55/00; Y10S55/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A VACUUM CLEANER BAG CONSTRUCTION COMPRISING A BAG MADE OF AIR-PERVIOUS PAPER, THE BAG HAVING FRONT AND BACK PANELS, AND BEING CLOSED AT BOTH ENDS, A TUBE HAVING AN INTERIOR THAT CONNECTS WITH THE INTERIOR OF THE BAG THROUGH AN OPENING IN THE FRONT PANEL OF THE BAG, THE SIDES OF THE TUBE BEING SECURED TO THE FRONT PANEL AROUND THE ENTIRE PERIPHERY OF THE OPENING FOR PREVENTING LEAKAGE OF AIR BETWEEN THE SIDES OF THE TUBE AND THE FRONT PANEL OF THE BAG AROUND THE PERIPHERY OF SAID OPENING, THE TUBE BEING CLOSED AT BOTH ENDS, AND A PORTION OF THE LENGTH OF THE TUBE FOR A SUBSTANTIAL DISTANCE FROM ONE END BEING FREE OF ANY CONNECTION WITH THE BAG AROUND THE ENTIRE PERIPHERY OF THE TUBE CORRESPONDING END PORTIONS OF THE BAG AND TUBE, WHERE THE BAG AND TUBE ARE NOT CONNECTED WITH ONE ANOTHER, BEING ADAPTED TO BE CUT OFF TO LEAVE THE END OF THE BAG OR TUBE OPEN, THE PERIPHERY OF THE END OF THE BAG BEING DIFFERENT FROM THAT OF THE END OF THE TUBE FOR FITTING DIFFERENT VACUUM CLEANERS WITH WHICH THE BAG IS INTENDED TO BE USED.
Claim 2
Dependent Claim
195 words
A VACUUM CLEANER BAG CONSTRUCTION COMPRISING A BAG MADE OF AIR-PERVIOUS PAPER, THE BAG HAVING FRONT AND BACK PANELS, AND BEING CLOSED AT BOTH ENDS, A TUBE HAVING AN INTERIOR THAT CONNECTS WITH THE INTERIOR OF THE BAG THROUGH AN OPENING IN THE FRONT PANEL OF THE BAG, THE SIDES OF THE TUBE BEING SECURED TO THE FRONT PANEL AROUND THE ENTIRE PERIPHERY OF THE OPENING FOR PREVENTING LEAKAGE OF AIR BETWEEN THE SIDES OF THE TUBE AND THE FRONT PANEL OF THE BAG AROUND THE PERIPHERY OF SAID OPENING, THE TUBE BEING CLOSED AT BOTH ENDS, AND A PORTION OF THE LENGTH OF THE TUBE FOR A SUBSTANTIAL DISTANCE FROM ONE END BEING FREE OF ANY CONNECTION WITH THE BAG AROUND THE ENTIRE PERIPHERY OF THE TUBE CORRESPONDING END PORTIONS OF THE BAG AND TUBE, WHERE THE BAG AND TUBE ARE NOT CONNECTED WITH ONE ANOTHER, BEING ADAPTED TO BE CUT OFF TO LEAVE THE END OF THE BAG OR TUBE OPEN, THE PERIPHERY OF THE END OF THE BAG BEING DIFFERENT FROM THAT OF THE END OF THE TUBE FOR FITTING DIFFERENT VACUUM CLEANERS WITH WHICH THE BAG IS INTENDED TO BE USED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |