US3496690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Main runner part
Assignee: Chicago Metallic Co LLC
•
Filing: 1967-04-17
•
Granted: 1970-02-24
•
Expires: 1987-04-17
Abstract
No abstract record available.
Inventors
- 👤 Reinhardt H Jahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:19
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/064; E04B9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3189139A
Cited
US3221846A
Cited
US3290075A
Cited
US3221466A
Cited
US3284977A
Cited
US3374596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |