Patent US3222834A successfully refreshed from Google Patents.
US3222834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet retaining means
Assignee: Individual
•
Filing: 1963-04-23
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Granted: 1965-12-14
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Expires: 1983-04-23
Abstract
No abstract record available.
Inventors
- 👤 William G Taft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:11
CPC Classifications
E; E04; E04F; E04F19/00; E04F19/08; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/205
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
THE COMBINATION OF A SERVICE DUCT HAVING AN ACCESS OPENING, A FLOOR OVERLYING THE DUCT AND HAVING AN OPENING THEREIN ABOVE THE DUCT ACCESS OPENING, AN ACCESS COVER PLATE DISPOSED IN THE FLOOR OPENING, A MAIN BODY OF CARPET HAVING AN OPENING THEREIN CORRESPONMDING GENERALLY TO THE FLOOR OPENING, AND A SEVERED PORTION OF CAPRET ISPOSED IN THE CARPET OPENING, A CARPET RETAINING MEMBER COMPRISING AN ANNULAR RING OVERLYING THE ADJACENT EDGES OF THE MAIN BODY OF CARPET AND THE SEVERED PORTION OF CARPET, APERTURES FORMED IN SAID RING THROUGH WHICH
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |