US3481388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated door construction
Assignee: Won-Door Corp
•
Filing: 1968-04-25
•
Granted: 1969-12-02
•
Expires: 1988-04-25
Abstract
No abstract record available.
Inventors
- 👤 Jay A Smart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:54
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/92; E06B3/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2005436A
Cited
US2007374A
Cited
US2094635A
Cited
US2999277A
Cited
US3234996A
Cited
US3277952A
Cited
US3223147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |