US2499737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level
Assignee: Individual
•
Filing: 1948-02-09
•
Granted: 1950-03-07
•
Expires: 1968-02-09
Abstract
No abstract record available.
Inventors
- 👤 William E Farrow
- 👤 William L Farrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:24
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US379662A
Cited
US567347A
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US1312303A
Cited
US1618262A
Cited
US886333A
Cited
US896483A
Cited
US1359474A
Cited
US1410283A
Cited
US1625683A
Cited
US1797047A
Cited
US2247541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |