Patent US2477524A successfully refreshed from Google Patents.
US2477524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring bolt
Assignee: Individual
•
Filing: 1947-07-01
•
Granted: 1949-07-26
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Expires: 1967-07-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Oswald
- 👤 Theodore E Weil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:51
CPC Classifications
E; E05; E05C; E05C1/00; E05C1/02; E05C1/04; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0997
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |