US3540178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Open work grille structure
Assignee: ULMA SpA
•
Filing: 1968-03-25
•
Granted: 1970-11-17
•
Expires: 1988-03-25
Abstract
No abstract record available.
Inventors
- 👤 Massimo Altissimo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:14
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; B; B21; B21D; B21D47/00; B21D47/005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49876
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1991506A
Cited
US1996046A
Cited
US2420112A
Cited
US2905286A
Cited
US3044586A
Cited
FR1358334A
Cited
US3248837A
Cited
US3291978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |