US2416697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescope
Assignee: Giddings and Lewis LLC
•
Filing: 1943-03-24
•
Granted: 1947-03-04
•
Expires: 1963-03-24
Abstract
No abstract record available.
Inventors
- 👤 Erwin J Kaiser
- 👤 Dauber Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US715793A
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US737872A
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US1091933A
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GB191516766A
Cited
US1505878A
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GB322460A
Cited
US1988390A
Cited
US2042815A
Cited
US2171360A
Cited
US2179850A
Cited
US2277065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |