US3004640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated tubular section structural members
Assignee: Macomber Inc
•
Filing: 1958-02-07
•
Granted: 1961-10-17
•
Expires: 1978-02-07
Abstract
No abstract record available.
Inventors
- 👤 Macomber Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:19
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/06; E04C3/07; E04C2003/0404; E04C2003/0408; E04C2003/0413; E04C2003/0426; E04C2003/043; E04C2003/0439
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |