Patent US3137899A successfully refreshed from Google Patents.
US3137899A
Expired / Lapsed
US
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Composite truss
Assignee: Individual
•
Filing: 1960-10-04
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Granted: 1964-06-23
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Expires: 1980-10-04
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Troutner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:53
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/29; E04C3/292; E04C3/04; E04C3/06; E04C3/07; E04C2003/0486; E04C2003/0491; F; F16; F16B; F16B2200/00; F16B2200/10; Y; Y10; Y10T; Y10T403/00; Y10T403/44; Y10T403/46
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |