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US3543580A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1969-04-25
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Granted: 1970-12-01
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Expires: 1989-04-25
Abstract
No abstract record available.
Inventors
- 👤 Landon G Mcgill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:36
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/32; H; H01; H01H; H01H29/00; H01H29/20; H01H35/00; H01H35/18; H01H35/186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2254068A
Cited
US2441698A
Cited
FR1304739A
Cited
FR1357360A
Cited
US3291934A
Cited
US3440375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |