US2772757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural material
Assignee: Individual
•
Filing: 1952-11-19
•
Granted: 1956-12-04
•
Expires: 1972-11-19
Abstract
No abstract record available.
Inventors
- 👤 Hammond Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:14
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; E04C2/365; B; B65; B65D; B65D65/00; B65D65/38; B65D65/44; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49879; Y10T29/49908; Y10T29/49936; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165; Y10T428/26
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |