US3387312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device
Assignee: WALLACE W WESTPHAL
•
Filing: 1965-09-09
•
Granted: 1968-06-11
•
Expires: 1985-09-09
Abstract
No abstract record available.
Inventors
- 👤 Wallace W Westphal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:11
CPC Classifications
A; A47; A47L; A47L17/00; A47K; A47K11/00; A47K11/10; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US678967A
Cited
US1625792A
Cited
US2166343A
Cited
US3028614A
Cited
US3029651A
Cited
US3240077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |