US2698368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire alarm
Assignee: DICTOGRAPH PRODUCTS CO Inc
•
Filing: 1951-06-08
•
Granted: 1954-12-28
•
Expires: 1971-06-08
Abstract
No abstract record available.
Inventors
- 👤 Philip N Lehr
- 👤 Koci Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:04
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/48; G01K5/56; G01K5/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US578345A
Cited
US1544549A
Cited
US1760470A
Cited
US2101637A
Cited
US2159090A
Cited
US2269863A
Cited
US2265684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |