US1510792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for determining phase difference
Assignee: Individual
•
Filing: 1921-07-01
•
Granted: 1924-10-07
•
Expires: 1941-07-01
Abstract
No abstract record available.
Inventors
- 👤 Merritt Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:08
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/02; G01S3/14
Claims Analysis
Total Claims: 0
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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) | 1927-10-07 | 1928-04-07 | 1928-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-10-07 | 1932-04-07 | 1932-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-10-07 | 1936-04-07 | 1936-10-07 | $7700.00 | Window Closed / Lapsed |