US3429092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural frames and methods and means therefor
Assignee: DYNA STRUCTURES
•
Filing: 1966-05-26
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Granted: 1969-02-25
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Expires: 1986-05-26
Abstract
No abstract record available.
Inventors
- 👤 Edward D Perry
- 👤 Wayne C Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:16
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/20; E04B1/38; E04B1/41; E04B1/4157; E04B1/21; E04B1/215; E04B1/35; E04B2001/3583
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
AT209539B
Cited
US3260025A
Cited
US3110982A
Cited
US3216157A
Cited
NL296773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |