US2553099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pantographic sighting apparatus for forming machines
Assignee: American Optical Corp
•
Filing: 1946-03-30
•
Granted: 1951-05-15
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Expires: 1966-03-30
Abstract
No abstract record available.
Inventors
- 👤 David D Lowber
- 👤 Gustav E Guellich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:35
CPC Classifications
B; B24; B24B; B24B27/00; B24B27/0038; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301232; Y10T409/303416; Y10T409/303472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US790172A
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US1811940A
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DE614088C
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US2179388A
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US2206587A
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US2164169A
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US2234539A
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US2338729A
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US2389503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |