US1336557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing smoke-screens
Assignee: National Carbon Co Inc
•
Filing: 1918-09-19
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Granted: 1920-04-13
•
Expires: 1938-09-19
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Benner
- 👤 Harry F French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:15
CPC Classifications
F; F41; F41H; F41H9/00; F41H9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1923-04-13 | 1923-10-13 | 1924-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-04-13 | 1927-10-13 | 1928-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-04-13 | 1931-10-13 | 1932-04-13 | $7700.00 | Window Closed / Lapsed |