US3546677A
Expired / Lapsed
US
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Data processing system having tree structured stack implementation
Assignee: Unisys Corp
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Filing: 1967-10-02
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Granted: 1970-12-08
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Expires: 1987-10-02
Abstract
No abstract record available.
Inventors
- 👤 Robert S Barton
- 👤 Bobby A Creech
- 👤 Benjamin A Dent
- 👤 Erwin A Hauck
- 👤 William M Mckeeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:40
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/46; G06F9/461; G06F9/463; G06F12/00; G06F12/02; G06F12/08; G06F12/10; G06F9/44; G06F9/448; G06F9/4482; G06F9/4484
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |