US3455807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas detector
Assignee: MSA Safety Inc
•
Filing: 1964-08-03
•
Granted: 1969-07-15
•
Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 Moses G Jacobson
- 👤 Frank J De Luca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:07
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2939827A
Cited
US2851654A
Cited
US3291705A
Cited
US3216911A
Cited
US3313720A
Cited
US3296113A
Cited
US3247452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |