US3231929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door butt hinge
Assignee: Individual
•
Filing: 1963-07-29
•
Granted: 1966-02-01
•
Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Hiltunen Lauri
- 👤 Valisalo Paavo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:44
CPC Classifications
E; E05; E05D; E05D5/00; E05D5/02; E05D5/08; E05D11/00; E05D11/0009; E05Y; E05Y2900/00; E05Y2900/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US174639A
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US290464A
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US424565A
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US1190435A
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US1098634A
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US1332768A
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GB380549A
Cited
US2188928A
Cited
US2272241A
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US2618010A
Cited
US2748420A
Cited
FR1079619A
Cited
US2867840A
Cited
US3081482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |