US3451876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic light-transmitting panel
Assignee: K S H Inc
•
Filing: 1964-05-28
•
Granted: 1969-06-24
•
Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Edelmann
- 👤 Richard S Hawes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:13
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/04; G02B5/045; B; B29; B29C; B29C43/00; B29C43/22; B29C43/30; B29C43/305; B29C63/00; E; E04; E04C; E04C2/00; E04C2/54; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1041; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24537; Y10T428/26; Y10T428/263; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/2891
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB598440A
Cited
US2776452A
Cited
US2875087A
Cited
GB805388A
Cited
US3025198A
Cited
US2970066A
Cited
US3067078A
Cited
US3133854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |