US2924860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally insulating door
Assignee: PARHAM
•
Filing: 1957-03-25
•
Granted: 1960-02-16
•
Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles L Parham
- 👤 Marvin M Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:30
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/24; E04C2/243; E05; E05D; E05D5/00; E05D5/02; E05D5/06; E06; E06B; E06B3/00; E06B3/70; E06B3/82; E06B3/86; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; E06B2003/7046; Y; Y10; Y10S; Y10S49/00; Y10S49/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2369006A
Cited
US2552641A
Cited
US2649135A
Cited
FR1023566A
Cited
US2707808A
Cited
US2731682A
Cited
US2827670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |