US2941635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow rectangular sectional metal structural member
Assignee: Individual
•
Filing: 1952-09-06
•
Granted: 1960-06-21
•
Expires: 1972-09-06
Abstract
No abstract record available.
Inventors
- 👤 Charles L Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:47
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/08; E04C3/09; E04C2003/0404; E04C2003/0408; E04C2003/0413; E04C2003/0426; E04C2003/0434; E04C2003/0443; E04C2003/0465; E04C2003/0486; E04C2003/0491
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR761427A
Cited
US742809A
Cited
GB157312A
Cited
US1552474A
Cited
US1604375A
Cited
US1761037A
Cited
FR722419A
Cited
US1900711A
Cited
US2101090A
Cited
US2180502A
Cited
US2177036A
Cited
US2180830A
Cited
US2485165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |