Patent US3319768A successfully refreshed from Google Patents.
Patent US2840866A successfully refreshed from Google Patents.
US2840866A
Expired / Lapsed
US
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Movable shelter-stationary shelter connector
Assignee: Individual
•
Filing: 1952-11-21
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Granted: 1958-07-01
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Expires: 1972-11-21
Abstract
No abstract record available.
Inventors
- 👤 Harold A Paulsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:01
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/343; E04B1/34305; E04B1/3431; E04B1/34336
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1186963A
Cited
US1256050A
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US1923124A
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US2216547A
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US2247340A
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US2354045A
Cited
US2419750A
Cited
FR927895A
Cited
US2581293A
Cited
US2648307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |