Patent US3289739A successfully refreshed from Google Patents.
US3289739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder cord or ladder tape carrier
Assignee: Hunter Douglas International Ltd
•
Filing: 1964-11-25
•
Granted: 1966-12-06
•
Expires: 1984-11-25
Abstract
No abstract record available.
Inventors
- 👤 Hensel Erich Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:25
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/38; E06B9/382; E06B9/28; E06B9/30; E06B9/303; E06B9/307; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3916; Y10T24/3991
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A LADDER CARRIER FOR A VENETAIN BLIND HAVING AN OPERATING SHAFT, SAID LADDER CARRIER COMPRISING AN OPEN RING OF RESILIENT MATERIAL HAVING A MIDDLE PORTION AND TWO CURVED LEGS ADAPTED TO GRIP AROUND THE OPERATING SHAFT; SAID MIDDLE PORTION BEING PROVIDED WITH AN ACCOMMODATION SPACE FOR PART OF AT LEAST ONE LADDER CORD,
Claim 2
Dependent Claim
53 words
A LADDER CARRIER FOR A VENETAIN BLIND HAVING AN OPERATING SHAFT, SAID LADDER CARRIER COMPRISING AN OPEN RING OF RESILIENT MATERIAL HAVING A MIDDLE PORTION AND TWO CURVED LEGS ADAPTED TO GRIP AROUND THE OPERATING SHAFT; SAID MIDDLE PORTION BEING PROVIDED WITH AN ACCOMMODATION SPACE FOR PART OF AT LEAST ONE LADDER CORD,
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |