US2905338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indexing mechanism
Assignee: Individual
•
Filing: 1952-08-28
•
Granted: 1959-09-22
•
Expires: 1972-08-28
Abstract
No abstract record available.
Inventors
- 👤 Leonard J Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:28
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US192907A
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US724338A
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US942571A
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US1059271A
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US1803458A
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US2283064A
Cited
US2424153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |