US2780830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1955-06-20
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Granted: 1957-02-12
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Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Archer W Kammerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:15
CPC Classifications
E; E05; E05D; E05D5/00; E05D5/10; E05D5/12; E05D5/121; E05Y; E05Y2600/00; E05Y2600/50; E05Y2600/506; F; F16; F16B; F16B2200/00; F16B2200/69; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/954; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49922; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32861; Y10T403/32885
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1208422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |