Patent DE2517954A1 successfully refreshed from Google Patents.
US2718628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check list display device
Assignee: Individual
•
Filing: 1952-04-14
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Granted: 1955-09-20
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Expires: 1972-04-14
Abstract
No abstract record available.
Inventors
- 👤 Woodrow W Bartlett
- 👤 Rex L Pilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:26
CPC Classifications
B; B64; B64D; B64D45/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1580286A
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US1708533A
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US1690244A
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US2259123A
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US2262756A
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US2292392A
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US2435907A
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US2599392A
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US2600132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |