US3605534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Board cutting machine
Assignee: Individual
•
Filing: 1967-05-24
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Granted: 1971-09-20
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Expires: 1987-05-24
Abstract
Abstract THIS INVENTION RELATES TO BOARD CUTTING MACHINES, AND MORE PARTICULARLY TO MACHINES FOR FORMING STRUCTURES FROM FIBROUS BOARD HAVING AN IMPERMEABLE FACING ON ONE OR BOTH SIDES. THE MACHINE CUTS GROOVES IN A BOARD OF MATERIAL WHICH PERMITS THE BOARD TO BE FOLDED INTO A RECTANGULAR FORM TO PROVIDE A DUCT. THE BOARD MAY ALSO BE WRAPPED AROUND ANY STRUCTURE FOR INSULATION, SUCH AS PIPE OR STRUCTURAL MEMBERS.
Inventors
- 👤 William H Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:11
CPC Classifications
B; B27; B27G; B27G5/00; B26; B26D; B26D3/00; B26D3/02; B26D3/06; F; F24; F24F; F24F13/00; F24F13/02; F24F13/0209; F24F13/0245; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/502624; Y10T83/00; Y10T83/02; Y10T83/0304; Y10T83/647; Y10T83/6584; Y10T83/6592; Y10T83/6595; Y10T83/664; Y10T83/869; Y10T83/8771; Y10T83/929; Y10T83/937; Y10T83/9457; Y10T83/9488; Y10T83/949
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |