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Patent US2458074A successfully refreshed from Google Patents.
US2458074A
Expired / Lapsed
US
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Building unit joint construction
Assignee: BRITISH POWER BOAT Co Ltd
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Filing: 1945-08-21
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Granted: 1949-01-04
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Expires: 1965-08-21
Abstract
No abstract record available.
Inventors
- 👤 Hill Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:51
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/02; E04B1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |