Patent US2833004A successfully refreshed from Google Patents.
US2833004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door
Assignee: Kawneer Co Inc
•
Filing: 1956-06-13
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Granted: 1958-05-06
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Expires: 1976-06-13
Abstract
No abstract record available.
Inventors
- 👤 David R Johnson
- 👤 Dan C Muessel
- 👤 Jack M Roehm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:34
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/70; E06B3/88; E06B3/7015; E06B3/7017; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/234; Y10T428/236
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |