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US3421272A
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Assignee: WALKER JAMAR JR
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Filing: 1966-05-20
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Granted: 1969-01-14
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Expires: 1986-05-20
Abstract
No abstract record available.
Inventors
- 👤 Walker Jamar Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:36
CPC Classifications
G; G09; G09F; G09F15/00; G09F15/0068; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44009; Y10T24/44291; Y10T24/44376; Y10T24/44385; Y10T24/44402
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2244042A
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US2934180A
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US2869210A
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US3037593A
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US3014258A
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US3261625A
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US3226897A
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US3256668A
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US3221892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |