US2809074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural beam with fire extinguisher
Assignee: Individual
•
Filing: 1953-05-05
•
Granted: 1957-10-08
•
Expires: 1973-05-05
Abstract
No abstract record available.
Inventors
- 👤 Mcdonald James Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:39
CPC Classifications
A; A62; A62C; A62C35/00; A62C35/58; A62C3/00; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; E04B1/943; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/08; E04C3/10; E04C3/29; E04C3/293; E04C3/294; E04B2001/949; E04C2003/0486; E04C2003/0495
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1011335A
Cited
US1190824A
Cited
FR485184A
Cited
US1594505A
Cited
US1555989A
Cited
US2241617A
Cited
GB562035A
Cited
US2558946A
Cited
US2510958A
Cited
GB614171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |