US2800194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable dust bag
Assignee: Individual
•
Filing: 1953-07-07
•
Granted: 1957-07-23
•
Expires: 1973-07-07
Abstract
No abstract record available.
Inventors
- 👤 Peek Roelof Theodorus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:46
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; Y; Y10; Y10S; Y10S55/00; Y10S55/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US754053A
Cited
US1416876A
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US1411975A
Cited
GB257711A
Cited
US1897976A
Cited
US1821824A
Cited
US2122568A
Cited
US2123914A
Cited
GB512945A
Cited
US2564845A
Cited
US2605858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |