US3472451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank washing apparatus
Assignee: Butterworth System Inc
•
Filing: 1968-01-19
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Granted: 1969-10-14
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Expires: 1988-01-19
Abstract
No abstract record available.
Inventors
- 👤 James W Orem
- 👤 Leonard V Lione
- 👤 Daniel T Turco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:11
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/14; B08; B08B; B08B9/00; B08B9/08; B08B9/093; B08B9/0936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |