US3397494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building apparatus and method of making same
Assignee: Reynolds Metals Co
•
Filing: 1966-04-04
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Granted: 1968-08-20
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Expires: 1986-04-04
Abstract
No abstract record available.
Inventors
- 👤 James C Waring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:12
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/0007; E04B1/18; E04B1/26; E04B1/2604; E04B2001/268; E04B2001/2684
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2266235A
Cited
US2373284A
Cited
US2760238A
Cited
US2883852A
Cited
US3274739A
Cited
US3300936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |