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Patent US2662637A successfully refreshed from Google Patents.
US2662637A
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Carrying case
Assignee: American Optical Corp
•
Filing: 1950-12-27
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Granted: 1953-12-15
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Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 John T Armbruster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:10
CPC Classifications
B; B01; B01L; B01L9/00; Y; Y10; Y10T; Y10T24/00; Y10T24/13; Y10T24/1321; Y10T24/1324; Y10T24/1335
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US264096A
Cited
US1195217A
Cited
US1680804A
Cited
US2168822A
Cited
US2368803A
Cited
US2471861A
Cited
GB599405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |