US3397502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite truss structure
Assignee: Reynolds Metals Co
•
Filing: 1966-11-10
•
Granted: 1968-08-20
•
Expires: 1986-11-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Eric Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:33
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/06; E04C3/07; E04C3/29; E04C3/292; E04C2003/0404; E04C2003/0408; E04C2003/0421; E04C2003/0426; E04C2003/043; E04C2003/0443; E04C2003/0447; E04C2003/0486; E04C2003/0491
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1101189A
Cited
US1602283A
Cited
US1824076A
Cited
US1621299A
Cited
US1837706A
Cited
US1951810A
Cited
US2031765A
Cited
US2082159A
Cited
US2377427A
Cited
US3129493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |