US3422826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning machine
Assignee: Individual
•
Filing: 1967-01-03
•
Granted: 1969-01-21
•
Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:07
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1435140A
Cited
US1553013A
Cited
GB267269A
Cited
US1949814A
Cited
US1975760A
Cited
US2062704A
Cited
DE712920C
Cited
US3041212A
Cited
US3029028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |