US2473610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barometer
Assignee: INTERVAL INSTR Inc
•
Filing: 1944-01-29
•
Granted: 1949-06-21
•
Expires: 1964-01-29
Abstract
No abstract record available.
Inventors
- 👤 Rieber Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:27
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0001; G01L9/0008; G01L9/0013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB155854A
Cited
US1870058A
Cited
US1995305A
Cited
US2050674A
Cited
US2253769A
Cited
US2265011A
Cited
US2302895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |