US2606338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaning brush, including removable bristle holding cores
Assignee: ELLEN FRISCOE
•
Filing: 1949-01-13
•
Granted: 1952-08-12
•
Expires: 1969-01-13
Abstract
No abstract record available.
Inventors
- 👤 Lorenzo Fred P De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:25
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/06; A47L9/0673; A46; A46B; A46B13/00; A46B13/001; A46B13/005; A47L9/0693
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US42726A
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DE457859C
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US676845A
Cited
US1355385A
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US1335689A
Cited
US1484027A
Cited
CH110914A
Cited
GB441154A
Cited
US2243120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |