US3500089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic cleaning apparatus
Assignee: Branson Ultrasonics Corp
•
Filing: 1967-05-09
•
Granted: 1970-03-10
•
Expires: 1987-05-09
Abstract
No abstract record available.
Inventors
- 👤 Kilian H Brech
- 👤 Vincent Gerald Krenke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:10
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/0207; B06B1/0223; B06B1/0238; B06B1/0246; B06B1/0253; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12; B06B2201/00; B06B2201/70; B06B2201/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2917691A
Cited
US3151284A
Cited
US3296511A
Cited
US3293456A
Cited
US3254284A
Cited
US3318578A
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 |