US2536718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable power optical system for training devices, microscopes, telescopes, and thelike
Assignee: KOLIMORGEN OPTICAL Corp
•
Filing: 1946-09-17
•
Granted: 1951-01-02
•
Expires: 1966-09-17
Abstract
No abstract record available.
Inventors
- 👤 Brandon Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:30
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/02; G02B21/025; G02B15/00; G02B15/14; G02B15/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191121086A
Cited
GB191321621A
Cited
US1116069A
Cited
US1445284A
Cited
US2392781A
Cited
US2388858A
Cited
US2420633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |