Patent US2738832A successfully refreshed from Google Patents.
US2738832A
Expired / Lapsed
US
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Cradled spanning board construction
Assignee: Individual
•
Filing: 1950-08-01
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Granted: 1956-03-20
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Expires: 1970-08-01
Abstract
No abstract record available.
Inventors
- 👤 Frank C Torkelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:20
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/12; E04C2/14; E04H; E04H3/00; E04H3/10; E04H3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US81120A
Cited
US133306A
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US174062A
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US207758A
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US489229A
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GB189905344A
Cited
US981966A
Cited
US1167692A
Cited
US1687706A
Cited
US2601910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |