US3388428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming plastic sheet material
Assignee: KENT E BUCHHOLZ
•
Filing: 1965-09-02
•
Granted: 1968-06-18
•
Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Kent E Buchholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:49
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/42; B29C51/421; B29C51/424; B29C51/008; B29C51/261; B29C51/262
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2891280A
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US3258813A
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US3287765A
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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) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |