US2942829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self adjustable leveling means
Assignee: Individual
•
Filing: 1957-04-24
•
Granted: 1960-06-28
•
Expires: 1977-04-24
Abstract
No abstract record available.
Inventors
- 👤 Theophile A Stiffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:35
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/13; A; A47; A47B; A47B91/00; A47B91/16; E; E04; E04B; E04B2/00; E04B2/74; E04B2/82; E04B2/821; E04B2/824; F21V21/06; F21V21/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE87701C
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US521368A
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US679468A
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US743758A
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US960700A
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US1903687A
Cited
US1951660A
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FR930073A
Cited
US2712262A
Cited
US2794205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |