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US1997092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall construction
Assignee: SEALED JOINT PRODUCTS CO Inc
•
Filing: 1934-02-07
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Granted: 1935-04-09
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Expires: 1954-02-07
Abstract
No abstract record available.
Inventors
- 👤 Charles G Duffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:20
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/56; E04B2/58; Y; Y10; Y10S; Y10S220/00; Y10S220/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-04-08 | 1938-10-08 | 1939-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-08 | 1942-10-08 | 1943-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-08 | 1946-10-08 | 1947-04-09 | $7700.00 | Window Closed / Lapsed |