US2718291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal doorframes
Assignee: Individual
•
Filing: 1954-08-12
•
Granted: 1955-09-20
•
Expires: 1974-08-12
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:32
CPC Classifications
E; E06; E06B; E06B1/00; E06B1/04; E06B1/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2538925A
Cited
US2660272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |