Patent US2917243A successfully refreshed from Google Patents.
US2917243A
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Tank washing apparatus
Assignee: Butterworth System Inc
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Filing: 1957-08-05
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Granted: 1959-12-15
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Expires: 1977-08-05
Abstract
No abstract record available.
Inventors
- 👤 Leonard V Lione
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:46
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/50; H01J31/506; B; B05; B05B; B05B3/00; B05B3/02; B05B3/04; B05B3/0417; B05B3/0444; B05B3/06; B08; B08B; B08B9/00; B08B9/08; B08B9/093; B08B9/0936; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1403503A
Cited
US2661241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |