US3294608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of prestressing a wood beam
Assignee: Individual
•
Filing: 1964-02-27
•
Granted: 1966-12-27
•
Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Peterson John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:01
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/12; E04C3/18; Y; Y10; Y10S; Y10S156/00; Y10S156/918; Y10S156/929; Y10T; Y10T156/00; Y10T156/11; Y10T156/1168; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2039398A
Cited
US3167882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |