US2747661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective device
Assignee: Individual
•
Filing: 1954-09-20
•
Granted: 1956-05-29
•
Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 Lucas Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:38
CPC Classifications
G; G08; G08B; G08B15/00; G08B15/007; E; E05; E05G; E05G5/00; E05G5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US537741A
Cited
US1367340A
Cited
US1348928A
Cited
US1522352A
Cited
US2088072A
Cited
US2067662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |