Patent US1679473A successfully refreshed from Google Patents.
US1679473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth gauge
Assignee: Carl Zeiss SMT GmbH
•
Filing: 1923-05-26
•
Granted: 1928-08-07
•
Expires: 1943-05-26
Abstract
No abstract record available.
Inventors
- 👤 Kabisius Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:53
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/22; G01B3/28
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) | 1931-08-07 | 1932-02-06 | 1932-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-07 | 1936-02-06 | 1936-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-07 | 1940-02-06 | 1940-08-07 | $7700.00 | Window Closed / Lapsed |