Patent US1698087A successfully refreshed from Google Patents.
US1698087A
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US
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Coupling for vacuum cleaners
Assignee: EUREKA VACUUM CLEANER Co
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Filing: 1923-01-22
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Granted: 1929-01-08
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Expires: 1943-01-22
Abstract
No abstract record available.
Inventors
- 👤 Egbert R Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:12
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; Y; Y10; Y10S; Y10S55/00; Y10S55/26; Y10T; Y10T403/00; Y10T403/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-01-08 | 1932-07-09 | 1933-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-01-08 | 1936-07-09 | 1937-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-01-08 | 1940-07-09 | 1941-01-08 | $7700.00 | Window Closed / Lapsed |