US3386202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic passageway
Assignee: Calculator Equipment Corp
•
Filing: 1964-06-04
•
Granted: 1968-06-04
•
Expires: 1984-06-04
Abstract
No abstract record available.
Inventors
- 👤 John B Crews
- 👤 Dillingham Edward
- 👤 James R Kearl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:00
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/14; G07F17/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US220624A
Cited
US417141A
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US3150454A
Cited
US1606782A
Cited
US1688709A
Cited
US1724932A
Cited
US2795875A
Cited
US3063179A
Cited
US3169329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |