US1726318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-electric photometer
Assignee: Individual
•
Filing: 1925-08-15
•
Granted: 1929-08-27
•
Expires: 1945-08-15
Abstract
No abstract record available.
Inventors
- 👤 Clayton H Sharp
- 👤 Edgar D Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:38
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/10; G01J1/20; G01J1/34; G01J1/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1932-08-26 | 1933-02-25 | 1933-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-08-26 | 1937-02-25 | 1937-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-08-26 | 1941-02-25 | 1941-08-27 | $7700.00 | Window Closed / Lapsed |