US1457804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact bowl
Assignee: Carl Zeiss SMT GmbH
•
Filing: 1922-06-03
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Granted: 1923-06-05
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Expires: 1942-06-03
Abstract
No abstract record available.
Inventors
- 👤 Wigand Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:30
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; Y; Y10; Y10S; Y10S425/00; Y10S425/808
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) | 1926-06-04 | 1926-12-04 | 1927-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-06-04 | 1930-12-04 | 1931-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-06-04 | 1934-12-04 | 1935-06-05 | $7700.00 | Window Closed / Lapsed |