US3608197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet knife and guide
Assignee: Individual
•
Filing: 1968-07-17
•
Granted: 1971-09-28
•
Expires: 1988-07-17
Abstract
Abstract A DEVICE FOR GUIDING THE CUTTING OF TWO CARPETS REQUIRING A SEAM AT A DOORWAY BETWEEN TWO ROOMS. AN ADJUSTABLE CARPET KNIFE SLIDES IN A SLOT IN THE DEVICE TO CUT EACH CARPET TO A PREDETERMINED DEPTH AND ALONG AN IDEN- TICAL LINE RELATIVE TO THE DOORJAMBS. THE DEVICE MAY CONSIST OF TWO SECTIONS WHICH FIT IN THE ORDINARY TOOLBOX.
Inventors
- 👤 David Lloyd Mcivor
- 👤 Richard Alvin Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:25
CPC Classifications
B; B26; B26B; B26B3/00; B26B3/08; Y; Y10; Y10T; Y10T83/00; Y10T83/748; Y10T83/7487; Y10T83/7493; Y10T83/7507
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |