US2945222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple smoke-signal unit
Assignee: DEL MAR ENGINEERING LAB Inc
•
Filing: 1955-12-05
•
Granted: 1960-07-12
•
Expires: 1975-12-05
Abstract
No abstract record available.
Inventors
- 👤 Mar Bruce E Del
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:11
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/56; F42B12/58; B; B64; B64D; B64D1/00; B64D1/16; F42B12/46; F42B12/48
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US913297A
Cited
US922709A
Cited
US1503830A
Cited
US2044617A
Cited
US1823304A
Cited
US2308060A
Cited
US2346325A
Cited
US2334552A
Cited
US2557120A
Cited
US2557162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |