US3512859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for closing a door
Assignee: Individual
•
Filing: 1968-04-24
•
Granted: 1970-05-19
•
Expires: 1988-04-24
Abstract
No abstract record available.
Inventors
- 👤 Louis F Barroero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:02
CPC Classifications
A; A47; A47B; A47B49/00; A47F; A47F3/00; A47F3/12; A47F3/125; A47F5/00; A47F5/02; A47F5/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2555070A
Cited
US2638400A
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US2673778A
Cited
US2588563A
Cited
US2698776A
Cited
US3060361A
Cited
US3429073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |