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US2874400A
Expired / Lapsed
US
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Non-electric vacuum cleaners and like cleaning appliances
Assignee: Burrage & Boyde Ltd
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Filing: 1956-12-05
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Granted: 1959-02-24
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Expires: 1976-12-05
Abstract
No abstract record available.
Inventors
- 👤 Burrage Albert Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:30
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/02; A47L5/06; A47L5/08; A47L5/12; A47L5/22; A47L5/28; A47L5/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2202980A
Cited
US2291250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |