Patent US2929473A successfully refreshed from Google Patents.
US2929473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural framework
Assignee: Individual
•
Filing: 1956-01-27
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Granted: 1960-03-22
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Expires: 1976-01-27
Abstract
No abstract record available.
Inventors
- 👤 Jeffrey B Lindsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:19
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/19; E04B1/1903; E04B2001/1924; E04B2001/1927; E04B2001/1957; E04B2001/196; E04B2001/1966; E04B2001/1969; E04B2001/1981; E04B2001/1987; E04B2001/199
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |