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US2930135A
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Assignee: Individual
•
Filing: 1955-05-20
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Granted: 1960-03-29
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Expires: 1975-05-20
Abstract
No abstract record available.
Inventors
- 👤 Sr Robert J Rodtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:36
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/0092; Y; Y10; Y10S; Y10S33/00; Y10S33/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1377675A
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US1662300A
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US1742103A
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US1865825A
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DE559051C
Cited
GB374404A
Cited
US1836964A
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US2031684A
Cited
US2111003A
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US2466919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |