US3006352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door frame and roll-up door mechanism for air locks
Assignee: CID AIR STRUCTURES Co
•
Filing: 1959-11-27
•
Granted: 1961-10-31
•
Expires: 1979-11-27
Abstract
No abstract record available.
Inventors
- 👤 Hozak Robert Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:00
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/20; E04H15/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1302182A
Cited
US2355248A
Cited
US2513152A
Cited
US2631661A
Cited
US2827138A
Cited
US2914776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |