US2934180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural element
Assignee: Individual
•
Filing: 1955-01-18
•
Granted: 1960-04-26
•
Expires: 1975-01-18
Abstract
No abstract record available.
Inventors
- 👤 Andrew B Hammitt
- 👤 Jr Herbert L Birum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:43
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/0004; F16B5/0008; F16B5/0028; E; E04; E04B; E04B2/00; E04B2/74; E04B2/76; E04B2/78; E04B2/7854
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US573891A
Cited
US775090A
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US1076547A
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US1594765A
Cited
US1717740A
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US1723500A
Cited
US1723307A
Cited
US2079635A
Cited
US2567554A
Cited
US2636312A
Cited
US2621764A
Cited
US2723427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |