US3432997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End closure for a disposable vacuum cleaner dust bag
Assignee: Hillshire Brands Co
•
Filing: 1967-03-06
•
Granted: 1969-03-18
•
Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 David F Downey
- 👤 Jacques L Le Baigue
- 👤 Bengt E Ohlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L9/1436; A47L9/1445; A47L9/1454; F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K15/035; F16K15/14; F16K15/144; F16K15/1441; Y; Y10; Y10S; Y10S493/00; Y10S493/962; Y10S55/00; Y10S55/02; Y10S55/05; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7845; Y10T137/7879; Y10T137/788; Y10T137/7898; Y10T137/7901; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49861; Y10T29/49863; Y10T29/49945
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |