US2732837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke generator
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:08
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/044; A23B4/052; A23B4/0523
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US113535A
Cited
US578531A
Cited
US2595146A
Cited
US797295A
Cited
US1644693A
Cited
US1939265A
Cited
FR758935A
Cited
US2127506A
Cited
US2481504A
Cited
US2532260A
Cited
US2606546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |