Patent US2729966A successfully refreshed from Google Patents.
US2729966A
Expired / Lapsed
US
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Bomb shelter
Assignee: Individual
•
Filing: 1951-05-24
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Granted: 1956-01-10
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Expires: 1971-05-24
Abstract
No abstract record available.
Inventors
- 👤 Dorothy C Lutteke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:21
CPC Classifications
E; E04; E04H; E04H9/00; E04H9/04; E04H9/10; E04H9/12; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US578891A
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US589780A
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US795984A
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US1276333A
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US1651220A
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DE698342C
Cited
GB525119A
Cited
GB526019A
Cited
GB543678A
Cited
US2346196A
Cited
FR921600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |