US3009581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural device
Assignee: BULMAN CORP
•
Filing: 1960-06-06
•
Granted: 1961-11-21
•
Expires: 1980-06-06
Abstract
No abstract record available.
Inventors
- 👤 Robert J Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:26
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/02; A; A47; A47B; A47B47/00; A47B47/02; A47B47/021; A47F; A47F5/00; A47F5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1788096A
Cited
US1824813A
Cited
US1941838A
Cited
US1953636A
Cited
US2051251A
Cited
US2654487A
Cited
US2930638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |