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Patent US2487786A successfully refreshed from Google Patents.
US2487786A
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Submergible fuel cell
Assignee: Individual
•
Filing: 1945-01-23
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Granted: 1949-11-15
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Expires: 1965-01-23
Abstract
No abstract record available.
Inventors
- 👤 Homer T Bogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:15
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/78; B63; B63B; B63B22/00; B63B22/02; B63B22/021; B63B22/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US211587A
Cited
US284667A
Cited
US557396A
Cited
US1312356A
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US1206747A
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US1255512A
Cited
US1384094A
Cited
US1448607A
Cited
US1844993A
Cited
US2000746A
Cited
GB466985A
Cited
US2287824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |