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Patent US3088429A successfully refreshed from Google Patents.
US3088429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning devices for removing marine growth from ships' hulls
Assignee: Individual
•
Filing: 1961-06-28
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Granted: 1963-05-07
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Expires: 1981-06-28
Abstract
No abstract record available.
Inventors
- 👤 Johannessen Harry De Fi Brandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:16
CPC Classifications
B; B63; B63B; B63B59/00; B63B59/06; B63B59/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A DEVICE FOR REMOVING MARINE GROWTH FROM SHIPS'' HULLS COMPRISING AN OUTER FRAME HAVING END PORTIONS, ROTATABLE ROLLER BRUSHES MOUNTED AT THE END PORTIONS OF SAID OUTER FRAME, AN INNER FRAME WHICH IS DISPLACEABLE TOWARDS AND AWAY FROM THE OUTER FRAME, MAGNETIC DRIVING ROLLERS CARRIED BY SAID INNER FRAME, A POWER SOURCE SUPPORTED BY SAID INNER FRAME, MEANS ASSOCIATED WITH SAID POWER SOURCE FOR IMPARTING A ROTARY MOVEMENT TO
Claim 2
Independent Claim
69 words
A DEVICE FOR REMOVING MARINE GROWTH FROM SHIPS'' HULLS COMPRISING AN OUTER FRAME HAVING END PORTIONS, ROTATABLE ROLLER BRUSHES MOUNTED AT THE END PORTIONS OF SAID OUTER FRAME, AN INNER FRAME WHICH IS DISPLACEABLE TOWARDS AND AWAY FROM THE OUTER FRAME, MAGNETIC DRIVING ROLLERS CARRIED BY SAID INNER FRAME, A POWER SOURCE SUPPORTED BY SAID INNER FRAME, MEANS ASSOCIATED WITH SAID POWER SOURCE FOR IMPARTING A ROTARY MOVEMENT TO
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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |