Patent US2562431A successfully refreshed from Google Patents.
US2562431A
Expired / Lapsed
US
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Mobile amphibious collapsible pontoon bridge
Assignee: Individual
•
Filing: 1948-04-01
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Granted: 1951-07-31
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Expires: 1968-04-01
Abstract
No abstract record available.
Inventors
- 👤 Maile Evangelino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:25
CPC Classifications
E; E01; E01D; E01D15/00; E01D15/14; E01D15/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1391421A
Cited
US1821310A
Cited
US1854336A
Cited
US2233240A
Cited
US2355473A
Cited
US2453149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |