US3471904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed flexible strand assembly and fitting
Assignee: Bethlehem Steel Corp
•
Filing: 1966-12-01
•
Granted: 1969-10-14
•
Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Toivo O Aho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:28
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/023; F; F16; F16G; F16G11/00; F16G11/02; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3907; Y10T24/398; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T403/00; Y10T403/49; Y10T403/4983
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2304194A
Cited
US2576528A
Cited
US2672596A
Cited
US2945457A
Cited
FR1183024A
Cited
US2958723A
Cited
DE1197948B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |