Patent US2722211A successfully refreshed from Google Patents.
US2722211A
Expired / Lapsed
US
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Mechanical projectors
Assignee: Individual
•
Filing: 1952-08-04
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Granted: 1955-11-01
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Expires: 1972-08-04
Abstract
No abstract record available.
Inventors
- 👤 Gustav A Eisele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:59
CPC Classifications
A; A63; A63F; A63F7/00; A63F7/22; A63F7/24; A63F7/2409; A63F7/2472; A63H; A63H13/00; A63H13/02; A63H13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US383512A
Cited
US491247A
Cited
US1056570A
Cited
US1249114A
Cited
US1469605A
Cited
US2001449A
Cited
US2196549A
Cited
US2482437A
Cited
US2534468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |