US1415002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection lens
Assignee: PROJECTION OPTICS Co Inc
•
Filing: 1920-09-21
•
Granted: 1922-05-02
•
Expires: 1940-09-21
Abstract
No abstract record available.
Inventors
- 👤 William H Repp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:39
CPC Classifications
G; G02; G02B; G02B9/00; G02B9/12
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) | 1925-05-01 | 1925-10-31 | 1926-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-05-01 | 1929-10-31 | 1930-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-05-01 | 1933-10-31 | 1934-05-02 | $7700.00 | Window Closed / Lapsed |