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Patent US1513591A successfully refreshed from Google Patents.
US1513591A
Expired / Lapsed
US
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Floating plant or harbor for airships and giant flying machines
Assignee: Luftschiffbau Zeppelin GmbH
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Filing: 1923-12-21
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Granted: 1924-10-28
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Expires: 1943-12-21
Abstract
No abstract record available.
Inventors
- 👤 Dorr Wilhelm Ernst
- 👤 Ernst A Lehmann
- 👤 Lempertz Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:43
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-10-28 | 1928-04-28 | 1928-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-10-28 | 1932-04-28 | 1932-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-10-28 | 1936-04-28 | 1936-10-28 | $7700.00 | Window Closed / Lapsed |