Patent US3393831A successfully refreshed from Google Patents.
US3393831A
Expired / Lapsed
US
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Glass slide dispenser
Assignee: Spectrum Plastics Group Inc
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Filing: 1966-11-25
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Granted: 1968-07-23
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Expires: 1986-11-25
Abstract
No abstract record available.
Inventors
- 👤 Calvin R Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:35
CPC Classifications
B; B01; B01L; B01L99/00; A; A47; A47F; A47F1/00; A47F1/04; A47F1/06; A61; A61B; A61B10/00; A61B10/0045; B65; B65D; B65D83/00; B65D83/08; B65D83/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US807402A
Cited
US909110A
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US1198394A
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US1697366A
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US2431523A
Cited
US2653704A
Cited
US2587380A
Cited
US2591855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |