Patent US3677268A successfully refreshed from Google Patents.
Patent US3509539A successfully refreshed from Google Patents.
US3509539A
Expired / Lapsed
US
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Manufacturing plant data acquisition system
Assignee: Weyerhaeuser Co
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Filing: 1967-12-18
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Granted: 1970-04-28
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Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 James P Fichten
- 👤 Jack R Gallet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:47
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/14; G06F13/20; G06F13/22; G07; G07C; G07C3/00; G07C3/005
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) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |