US2659938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building panel and construction
Assignee: Individual
•
Filing: 1946-07-26
•
Granted: 1953-11-24
•
Expires: 1966-07-26
Abstract
No abstract record available.
Inventors
- 👤 William H Crowther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:36
CPC Classifications
B; B32; B32B; B32B21/00; B32B21/13; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/12; E04D; E04D1/00; E04D1/12; E04D1/20; E04D1/205; E04D1/23; E04D1/29; E04D1/2907; E04D1/2914; E04D1/2918; E04D3/00; E04D3/35; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0864; E04F13/0889
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US492736A
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US1312056A
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US808998A
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US1674630A
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GB237460A
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US2231007A
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US2219450A
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US2363927A
Cited
US2390087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |