US2609068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal foil honeycomb core
Assignee: Glenn L Martin Co
•
Filing: 1949-03-11
•
Granted: 1952-09-02
•
Expires: 1969-03-11
Abstract
No abstract record available.
Inventors
- 👤 Theodore P Pajak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:03
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; E04C2/365; Y; Y10; Y10S; Y10S138/00; Y10S138/10; Y10S493/00; Y10S493/966; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T156/1052; Y10T156/1056; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49826; Y10T29/49879; Y10T428/00; Y10T428/12; Y10T428/1234; Y10T428/12361; Y10T428/24; Y10T428/24149; Y10T428/24165; Y10T428/24273
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |