US3489392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railing assembly having rail-post coupling bar
Assignee: WENZEL W THOM
•
Filing: 1968-08-09
•
Granted: 1970-01-13
•
Expires: 1988-08-09
Abstract
No abstract record available.
Inventors
- 👤 Wenzel W Thom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:16
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/04; F16B7/0406; F16B7/0413; E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; Y; Y10; Y10T; Y10T403/00; Y10T403/44; Y10T403/447; Y10T403/65; Y10T403/655
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1678350A
Cited
US2092217A
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US2238561A
Cited
US2762639A
Cited
US3352541A
Cited
US3313527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |