US3499792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning method and apparatus
Assignee: Soniflow Equipment Co
•
Filing: 1965-08-11
•
Granted: 1970-03-10
•
Expires: 1985-08-11
Abstract
No abstract record available.
Inventors
- 👤 Robert D Veith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:13
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2009278A
Cited
US2980123A
Cited
US2947312A
Cited
US3011922A
Cited
US3068829A
Cited
US3373752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |