US3049747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge
Assignee: Individual
•
Filing: 1960-02-25
•
Granted: 1962-08-21
•
Expires: 1980-02-25
Abstract
No abstract record available.
Inventors
- 👤 David C Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
E; E05; E05D; E05D5/00; E05D5/02; E05Y; E05Y2600/00; E05Y2600/60; E05Y2600/622
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US210686A
Cited
US238320A
Cited
US586663A
Cited
US968473A
Cited
US1821606A
Cited
US2069756A
Cited
GB757864A
Cited
FR1177698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |