US2789306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner attachment
Assignee: Individual
•
Filing: 1954-05-26
•
Granted: 1957-04-23
•
Expires: 1974-05-26
Abstract
No abstract record available.
Inventors
- 👤 Norman A Kath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:55
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0455
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE280323C
Cited
US1714287A
Cited
US1856136A
Cited
GB360612A
Cited
US1929345A
Cited
GB463735A
Cited
US2309583A
Cited
US2511497A
Cited
US2679061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |