US3535855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner cloth bag
Assignee: Mil-An Mfg Corp
•
Filing: 1968-03-25
•
Granted: 1970-10-27
•
Expires: 1988-03-25
Abstract
No abstract record available.
Inventors
- 👤 Sol Howard
- 👤 Robert Schaaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:14
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/149; A47L9/1427; Y; Y10; Y10S; Y10S55/00; Y10S55/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1895585A
Cited
US1821824A
Cited
US2122568A
Cited
US2352504A
Cited
US2325673A
Cited
US2804166A
Cited
US2829734A
Cited
US3422602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |