US2853279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer retarding shields
Assignee: Gilbert Associates Inc
•
Filing: 1953-11-27
•
Granted: 1958-09-23
•
Expires: 1973-11-27
Abstract
No abstract record available.
Inventors
- 👤 George W Switzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:17
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/06; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/107; Y; Y10; Y10S; Y10S165/00; Y10S165/903
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE280920C
Cited
US2646818A
Cited
US657366A
Cited
US782929A
Cited
US1688413A
Cited
US1756987A
Cited
US1811302A
Cited
US1815932A
Cited
US2234423A
Cited
US2564153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |