US2448616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas meter prover apparatus
Assignee: ELECTRONIC TESTER OF GAS METER
•
Filing: 1944-06-19
•
Granted: 1948-09-07
•
Expires: 1964-06-19
Abstract
No abstract record available.
Inventors
- 👤 Oakley Thurman
- 👤 Marion J Westenhaver
- 👤 Robert E Eggmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:31
CPC Classifications
G; G01; G01F; G01F25/00; G01F25/10; G01F25/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1254361A
Cited
US1934291A
Cited
US2028049A
Cited
US1991310A
Cited
US2039506A
Cited
US2197204A
Cited
US2361175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |