Patent US2099548A successfully refreshed from Google Patents.
US2099548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing gases
Assignee: Bacharach Instrument Co
•
Filing: 1936-12-04
•
Granted: 1937-11-16
•
Expires: 1956-12-04
Abstract
No abstract record available.
Inventors
- 👤 Louis L Vayda
- 👤 Raymond H Rossomme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:44
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1940-11-15 | 1941-05-17 | 1941-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-11-15 | 1945-05-17 | 1945-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-11-15 | 1949-05-17 | 1949-11-16 | $7700.00 | Window Closed / Lapsed |