Patent US2547146A successfully refreshed from Google Patents.
US2547146A
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Hollow pontoon structure and method of making the same
Assignee: Individual
•
Filing: 1947-01-30
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Granted: 1951-04-03
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Expires: 1967-01-30
Abstract
No abstract record available.
Inventors
- 👤 Howard E Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:08
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/001; B29D99/0014; B29D99/0017; B29C; B29C70/00; B29C70/68; B29C70/86; B29C70/865; B63; B63B; B63B5/00; B63B5/24; B29K; B29K2711/00; B29K2711/14; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US250717A
Cited
US1565532A
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US1344634A
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US1693773A
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US1789642A
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US2342023A
Cited
US2392734A
Cited
US2406697A
Cited
US2417586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |