US3526566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for scoring paperboard and product produced thereby
Assignee: Downingtown Paper Co
•
Filing: 1968-08-20
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Granted: 1970-09-01
•
Expires: 1988-08-20
Abstract
No abstract record available.
Inventors
- 👤 John Gibson Mcilvain Jr
- 👤 Thomas G Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:02
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/0003; B31F1/0006; B31F1/0009; B31F1/0012; B31F1/08; B31B; B31B50/00; B31B50/25; B31B50/252; Y; Y10; Y10S; Y10S229/00; Y10S229/93; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24264; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24628
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2598649A
Cited
US3039372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |