Patent US2833372A successfully refreshed from Google Patents.
US2833372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner equipped with disposable bag
Assignee: Individual
•
Filing: 1955-07-29
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Granted: 1958-05-06
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Expires: 1975-07-29
Abstract
No abstract record available.
Inventors
- 👤 Robert I Lappin
- 👤 Zaiger Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:14
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB387245A
Cited
DE926901C
Cited
US2564467A
Cited
US2596806A
Cited
US2596807A
Cited
US2555742A
Cited
US2719600A
Cited
US2766844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |