US3445052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinged laminate
Assignee: Phillips Petroleum Co
•
Filing: 1966-08-22
•
Granted: 1969-05-20
•
Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 John V Lewallen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:34
CPC Classifications
E; E05; E05D; E05D1/00; E05D1/02; B; B29; B29L; B29L2031/00; B29L2031/22; Y; Y10; Y10S; Y10S16/00; Y10S16/13; Y10S220/00; Y10S220/902; Y10S229/00; Y10S229/93; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1162524A
Cited
US1865159A
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US2576073A
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US3019486A
Cited
US3156371A
Cited
US3222437A
Cited
US3145904A
Cited
US3251382A
Cited
US3330437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |