Patent US3240180A successfully refreshed from Google Patents.
US3240180A
Expired / Lapsed
US
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Electrolysis preventer for propeller drives
Assignee: Individual
•
Filing: 1964-08-03
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Granted: 1966-03-15
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Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 James T Byrd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:33
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/36; C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/18; C23F2213/00; C23F2213/30; C23F2213/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AN ELECTROLSIS PREVENTER FOR A PROPELLER DRIVE HAVING A DEPENDING HOUSING WITH A POWERED SHAFT PROJECTING FROM THE LOWER PORTION THEREOF AND WITH A PROPELLER ROTATED THEREBY, AND INCLUDING, A CHAMBER FORMED IN THE LOWER PORTION OF THE HOUSING, AND A BODY OF ELECTROLYTICALLY SUSCEPTIBLE MATERIAL CONTAINED WITHIN THE CHAMBER.
Claim 2
Dependent Claim
50 words
AN ELECTROLSIS PREVENTER FOR A PROPELLER DRIVE HAVING A DEPENDING HOUSING WITH A POWERED SHAFT PROJECTING FROM THE LOWER PORTION THEREOF AND WITH A PROPELLER ROTATED THEREBY, AND INCLUDING, A CHAMBER FORMED IN THE LOWER PORTION OF THE HOUSING, AND A BODY OF ELECTROLYTICALLY SUSCEPTIBLE MATERIAL CONTAINED WITHIN THE CHAMBER.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |