Patent US3225509A successfully refreshed from Google Patents.
US3225509A
Expired / Lapsed
US
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Shock protective material
Assignee: Dufaylite Developments Ltd
•
Filing: 1962-10-31
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Granted: 1965-12-28
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Expires: 1982-10-31
Abstract
No abstract record available.
Inventors
- 👤 May George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:01
CPC Classifications
B; B65; B65D; B65D65/00; B65D65/38; B65D65/44; B31; B31D; B31D3/00; B31D3/02; Y; Y10; Y10S; Y10S493/00; Y10S493/968; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |