US2701912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extracting measuring device
Assignee: Individual
•
Filing: 1953-12-01
•
Granted: 1955-02-15
•
Expires: 1973-12-01
Abstract
No abstract record available.
Inventors
- 👤 Anna S Campbell
- 👤 Jr George E Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:00
CPC Classifications
G; G01; G01F; G01F11/00; G01F11/02; G01F11/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US142207A
Cited
US447286A
Cited
US740608A
Cited
US939198A
Cited
US1661734A
Cited
US1908813A
Cited
US2559328A
Cited
US2603867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |