US2546964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke generator
Assignee: Individual
•
Filing: 1946-03-26
•
Granted: 1951-04-03
•
Expires: 1966-03-26
Abstract
No abstract record available.
Inventors
- 👤 Benjamin B Blackford
- 👤 Charles R Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:35
CPC Classifications
F; F41; F41H; F41H9/00; F41H9/06; F41H9/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US943589A
Cited
GB191508642A
Cited
US1336557A
Cited
US1448073A
Cited
US1541103A
Cited
USRE16841E
Cited
US2173756A
Cited
US2396710A
Cited
US2333627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |