US3438830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming plywood panels
Assignee: JAMES R HARMSWORTH
•
Filing: 1965-08-16
•
Granted: 1969-04-15
•
Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 James R Harmsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:51
CPC Classifications
B; B27; B27D; B27D1/00; B27D1/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/1092; Y10T156/1093; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1751; Y10T156/1754; Y10T156/1776; Y10T156/1778; Y10T156/1798
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1686605A
Cited
US2318215A
Cited
US3200027A
Cited
US3202564A
Cited
US3379601A
Cited
US3322592A
Cited
US3389038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |