US2918709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent hot and cold insulating unit
Assignee: Individual
•
Filing: 1956-04-30
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Granted: 1959-12-29
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Expires: 1976-04-30
Abstract
No abstract record available.
Inventors
- 👤 Leonard J Corcoran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:20
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/67; E06B3/6715; E06B9/00; E06B9/24; E06B9/26; E06B9/264; F; F24; F24S; F24S20/00; F24S20/60; F24S20/63; F24S50/00; F24S50/80; F24S70/00; F24S70/60; F24S70/65; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S62/00; Y10S62/01
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) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |