Patent US4728955A successfully refreshed from Google Patents.
Patent US2850089A successfully refreshed from Google Patents.
US2850089A
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Telescopic door
Assignee: Individual
•
Filing: 1954-05-21
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Granted: 1958-09-02
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Expires: 1974-05-21
Abstract
No abstract record available.
Inventors
- 👤 Charles W Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:15
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/92; E06B3/922; A; A47; A47K; A47K3/00; A47K3/28; A47K3/30; A47K3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB396839A
Cited
US2331822A
Cited
US2197385A
Cited
US2374490A
Cited
US2466913A
Cited
US2602504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |