US2808137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connection for structural members
Assignee: Individual
•
Filing: 1952-11-24
•
Granted: 1957-10-01
•
Expires: 1972-11-24
Abstract
No abstract record available.
Inventors
- 👤 Carl A Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:56
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/24; E04B1/2403; E04B2001/2415; E04B2001/2448; E04B2001/2457; E04B2001/2496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US732133A
Cited
US1879604A
Cited
US1970965A
Cited
US2042179A
Cited
US2231297A
Cited
US2562483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |